A:  Make sure you are leaving for your runs with a full tank - hydrated, and with 100-200 calories at least in the hour or two before you start.  Plan for and consume 4-8 oz of electrolyte replacement beverage every 2-3 miles (25-30 mins.) for long runs beyond an hour.  And, most importantly, replenish with carbohydrates as soon as possible after your run = 15-30 minutes max.  A banana, apple, orange, peanut butter sandwich, or energy bar with primarily carbs and some protein included are great choices to save in your car or keep ready at home for your return.  We know that in a depleted state your body will grab carbohydrates and convert them to working glycogen quickly.  So the post-run quick meal (100-200 kcal) within 30 minutes is key.  Miss this window and you'll be playing catch up the rest of the day!

Q:  What should I eat the night before a race?

A:  You should eat familiar foods at a normal dining hour.  The day before a race, incorporate plenty of carbs, but do not stuff yourself with two pounds of pasta.  Eat a moderate amount of a well balanced meal (pasta, chicken breast or bolognese sauce, salad, roll is one example) at dinner, and sip both water and sports drink throughout the day.  Steer clear of alcohol.

One mistake a lot of people at destination races make is to set out from the hotel for dinner at 7, head to a casual dining restaurant which is busy on weekends, wait 45 minutes or an hour for a table, and all of a sudden, start dinner at 9pm when the alarm clock is set for 5am.  Plan ahead and give your body time to assimilate the food and get ready to sleep! You and the line of people behind you at the porta-potties will be grateful.

Q:  How much should I drink during a marathon or half marathon?

A:  First of all, we recommend taking a drink to the start line and consuming 4-8 oz right before the gun goes off.  This is your first water stop.    Plan to consume 6-8 ounces of fluid every 2-3 miles or 25-30 minutes.  For bigger races with aid stations every mile or two, one good rule of thumb is to just take fluid every time (so you don't have to think about it).  A good strategy is to alternate sports drink and water.  Pinch the top between your thumb and fingers, and you can nurse it for a few more yards.  Most importantly, do not wait to consume fluids until you are "thirsty".  At that point, you are already playing catch-up.  Drink early, and when in doubt, choose the electrolyte replacement drink over water - then you'll get both the minerals and the H2O necessary for hydration.

Q: Everybody says I should try this (bar/ gel).  How do I know if it is right for me?

A:  Practice!  Your initial long runs serve as trial and error nutrition workouts.  Once you find your comfort zone with a particular drink, gel or bar include consumption in your longer and more rigorous workouts. Nutrition-wise, nothing you do on race day should be brand new territory.  We recommend consuming a gel packet (always with fluid) or similar amount of carbs through another source such as a banana every 45-60 minutes during a marathon or half marathon, which means you should also be doing this on your Big Kahuna long runs.  Keep in mind if you are following the earlier recommendation of energy drinks every 25-30 minutes you may not need the additional gel/bar/banana replacement.  Many utilize a combination of drinks, gels and food to provide quick available carbs within the race.  Everyone's body is different - make your refueling plan during workouts as deliberate as the other parts of your race preparation and you'll have one less unknown to worry about!

Clyde Wilson was a naval service member who enjoyed weight training and working out, when his doctor on the USS Carl Vinson informed him he was on the verge of needing medication for high blood pressure and cholesterol.  After making a transformative change in his nutritional habits, he went on to study chemistry and cell biology at Stanford and now teaches there and the University of California San Francisco Medical School.  In addition, he runs The Center for Human Nutrition and Exercise Science in Palo Alto, California.

This month, we asked Dr. Clyde to weigh in about the lethargy many runners struggle through after a long run.

1.  When many runners finish a big long run, often they report feeling extremely lethargic and low energy for much of the rest of the day, even after eating.  From a nutrition perspective, what may be going on here?

 Athletes need to replace their carbohydrate losses from training at a rate that their muscles are willing to absorb those carbohydrates.  If you burn 1000 calories in a workout, roughly 800 calories of which are carbohydrate, and attempt to replace all of those carbohydrates at one sitting, the over-flow of calories into your bloodstream will send more than half of it to fat cells, where the carbohydrate will be converted into fat. 

Therefore, eating enough calories is not enough. 

The calories have to go into lean tissues to actually help you recover.  Not eating enough is another way to fall short.  So the athlete has to eat enough carbohydrate, but spaced out over time or eaten with vegetables so that the carbohydrate calories enter the body at a rate muscle is willing to absorb them.  Protein helps re-build lean tissue but is unrelated to the feelings of lethargy after hard training.

2.  What are some best bet tips on things runners can do after the run to avoid that day-long bonky feeling?

It has been proven that proper hydration can drastically improve race results but many runners have trouble drinking water and sports drink while on the move.  The constant motion jostles your stomach which is already void of necessary blood resources which are attentive to your leg muscles. This is one of the many reasons that the art of hydration is essential.

We use the word ‘art’ as opposed to ‘science’ because there is a limited amount of calories and fluids that can be utilized intra-run (unlike cycling, walking and other activities).  Because of this we recommend experimentation to determine the most effective personal hydration routine (ie. Much like runcoach training the below is not a one-size-fits-all assignment. Experiment and find the routine that works best for you).

Here are some tips to get started:

1. Your hydration routine starts before the run
2. Drink 8-16 ounces of water or sports drink with your pre-run breakfast (slightly more on race day when you are up early and have more time to digest)
3. Coffee shouldn’t count into this equation as it is ultimately a diuretic (makes you pee)
4. Caffeine is fine to consume as is normal for you
5. Clear urine is a great sign
6. Stay hydrated leading up to the run
7. Take one final bathroom break right before the run
8. Then take one final drink before your start (less than 2 minutes prior is best)

For runs longer than 75 minutes or runs in the heat, you will need more than just water.  We recommend sports drinks containing sugar and salt in appropriate quantities.  Here are some tips to pick the right drink for you:

1. Check the race website you are training and find out which sports drink they will serve on the course
2. If the race drink sits well with your stomach then stick with it; if not go for an alternative
3. Look for ingredients that include sodium (salt/electrolyte) and sucrose (sugar)
4. Become well acquainted with the drink and find a way to have it on race day (carry a bottle)
5. Drink 4-8 ounces of fluid every 20-30 minutes within the run
6. Sports gels can be effective as they include key nutrients – take these in lieu of a sports drink.  They must be taken with water.
7. Because of caloric density you may only need to consume gels at every other fluid stop – keep up with water at every stop

Start refining your personal art of hydration at least 10 weeks prior to race day and practice before, during and after most runs.  Here are some tips for refueling on the run without carrying a water bottle:

1. Hide your water bottle somewhere along your running route
2. Plan to pass this spot every 20-30 minutes or place more bottles along your route
3. Invest in a fuel belt.
4. Enlist a friend to ride a bike with you or meet you intra-run to provide fuel
5. If gels are your fuel of choice simply carry some with you and then target public water fountains along your course

The exact amount you need to drink can be tricky and will vary from person to person.  Here’s a science project to help you learn about your hydration needs:

1. Weigh yourself prior to a run without any clothes on
2. Go for a run
3. Re-weigh yourself after without any clothes on
4. Calculate the difference and hydrate accordingly within your next run

Example: if you weighed 160 before a 90 minute workout and then weigh 157, you have lost 3 pounds and require 48 ounces of liquid. Your schedule for a similar event would be 8 ounces every 15 minutes to maintain your weight.

Note: This is just an example.  Please try this yourself and keep in mind that the amount you need will vary depending on the temperature, humidity and other personal physiological factors.

Proper hydration can improve your race results from 5K to the Marathon.  Invest some time into the development of your art of hydration.

Here are a few tips to help keep up with nutritional demands in the midst of a hectic daily schedule:

Keep a full water bottle on the bed stand and drink first thing in the morning. We know we should hydrate.  We also know we shouldn’t rely on coffee or Diet Coke all day, but are inclined to do that in order to stay “up” for the various challenges in our path from 8-5 (or longer).  Water also aids in digestion, allowing our bodies to assimilate the good (or not so good) food we consume in a more efficient way.

The best way to ensure you act on good intentions is to eliminate the obstacles holding you back.  You may forget a water bottle at home and/or yet again arrive to the start of your run, under-hydrated. In an ideal world, you should hydrate systematically throughout the day, with sports drink as well as water.  Be sure that your blood has plenty of electrolytes and that you have replenished sufficiently from perspiration in your last training session.   Failing that scenario (and that scenario is often failed), make sure that you’ve at least given yourself a fighting chance by getting some H2O down the hatch before you do or eat anything else.

Buy a box of your favorite bars and stash them everywhere.

Fueling during, before, and after your strenuous training is key to recovery as well as to just accomplishing the task in hand without hitting the wall.  Many times we are coming from work or another commitment, heading out first thing in the morning, fitting in a run at lunchtime, or otherwise shoehorning our workout into the sliver of time provided by the rest of the day.  Many times, that means we don’t have handy nutrition.  As a a result, we end up waiting too long to eat after a run, crash during a workout, run out of energy to even start, or finish with less punch because we ran out of gusto midway through.

Next time you are at Costco, Target, the supermarket, or shopping online, instead of purchasing a bar or two for the current instance at hand, purchase a box.  (Added bonus - this is often less expensive per unit.)  Take a few and stack them in the glove box, your briefcase, your purse, your desk, your sports bag, and in any other household vehicle you might end up driving to a run.  You’ll immediately forget about these anyway, and probably still try to address your nutrition needs on a day to day, run to run basis.  However, when you inevitably find yourself on a day where you have nothing to eat before, during, or after a run, a light bulb will go off above your head and you will be very glad you have your secret stash.

Get in the habit of always ordering salad on the side.

More than ever, Americans eat meals out of the home.  Social, work, athletic and other commitments leave us in need of quick meals or require us to socialize over a meal.  We all have been told since childhood that vegetables are an important part of our diet – after all, they provide crucial vitamins, minerals, fiber, and digestion regulation.  There will be plenty of times when a healthful set of options is not available.  When the opportunity is presented, always order the salad (and eat it without heavy doses of dressing).  Many times, salad is an option instead of fries or chips, vegetables are negotiable when ordering a sandwich, or a salad is possible to add on the side of an entrée for a nominal cost.  Always take this option, and you will mitigate the effects of the unavoidable bad nutrition situations you must navigate the rest of the day.

Have a healthy snack before you go

If your schedule requires you to eat out, if your office seems to have donuts or somebody’s birthday cake lurking in the break room more than once a week, or even if you are headed to the movie theater or a sporting event, have a piece of fruit or a healthy snack beforehand.  Chances are, what you have at home is less processed and better for you than concessions, party food, or sheet cake.  It is often very difficult to avoid over-consuming foods that are not helpful to your athletic goals.  By taking the edge off with a healthy snack beforehand, you increase the chances that you will make sane choices and employ appropriate portion control.

Of course, many non-runners lead busy lives and have a hard time staying on top of good nutrition.  Undoubtedly, running a session of mile repeats or a 20 miler on the weekend adds a layer of complexity and urgency to your nutrition needs, while further eroding your discretionary time to take in the appropriate food.  While none of us will be able to keep a perfect record on this front for any extended period of time, celebrate the wins when you make a good choice.  Don't dwell on the bad choices when you fall short.  If you have figured out a path to accomplishing success one time, you can find it again.  This will transform a single occurrence into an important habit.