By Art Zemach, M.D.
Sugar & Exercise
“Is sugar good or bad for athletes?” For me, this is a “fire shark” question. When my kids were little, they would ask me “Dad, would you rather be burned by fire, or eaten by sharks?” The truth is I would like to live. A “fire shark” question is framed in such a way as to obscure the truth. The truth is: sugar is a powerful fuel during exercise, and terrible for you when you’re resting on the couch.
The Difference Between Exercise & Rest
All carbohydrates, from kale to candy, are converted into simple sugars before they’re used by your muscles. If that process happens quickly, they’re good exercise fuels. If it happens slowly, they’re healthy dinner foods. Carbohydrates can be one or the other, but it’s difficult for them to be both.
When you’re exercising, your muscles can take in energy easily, making simple sugars (dextrose & sucrose) the best fuel choice because they act quickly. They don’t ask your digestive system to do a lot of work when your body is under stress, and therefore they don’t bother your gut or make your stomach hurt.
When you’re not exercising, your muscles need insulin’s help to take in energy. During periods of inactivity, complex carbohydrates, like broccoli or kale, are the best fuel choice. Simple sugars at rest will take your hormones and blood sugar on a roller coaster ride that is hard on your body in a number of ways. When you’re sitting on the couch, candy and sugary drinks will increase your risk for obesity, diabetes and heart disease.
Get the Timing Right!
When you’re exercising or racing, it’s important to give your body time to make a definitive transition between rest physiology and exercise physiology.
Give your body 20-30 minutes for muscles to utilize glucose without the assistance of insulin and for exercise hormones to suppress insulin secretion before you begin drinking your sports drink. In other words, wait about 30 minutes before consuming Endurance Fuel during exercise.
Sip your drink slowly and spread your carbohydrate intake over each hour. Don’t down an hour’s worth of sport drink all at once.
What About Recovery?
The first 30-60 minutes after exercise is often called the “golden hour,” when your body is especially efficient at replenishing depleted energy stores.
In addition to during exercise, the golden hour is another time when simple sugars work well, and don’t cause blood sugar spikes and crashes. Replenishing your glycogen stores efficiently will help make you feel better quicker after your workout, and you’ll be ready for your next workout sooner.
Tailwind Rebuild is packed with the simple sugars your body needs to replenish glycogen stores during the 30-60 minute golden hour.
The Take-Home Message
Exercise and rest are different. Simple sugars are great exercise fuels, but they’re bad for you when you’re sitting on the couch. Broccoli is great for dinner, but it’s not a great racing fuel.
See you on the trails!
Great article! As a physician and ultrarunner I really appreciate this.
One question I have is that I noticed Tailwind recommends drinking some of their product 10-15 min before exercise, yet you state that waiting until 30 minutes into exercise is best. Can you comment on this ?
Thanks !
Hi Jeff – Great question! Endurance Fuel was designed to be used during exercise. We don’t recommend drinking it before exercise, however, you can certainly have a few sips prior to exercise to top off glycogen stores if desired. It is best to start drinking Endurance Fuel about 30 minutes into your endurance exercise (1+ hours). If your exercise is under an hour, you should be fine with just water!
Thanks so much !
Love your product it has really helped lessen nausea in my races.
Thanks, this is super helpful explanation!
I was not aware that Tailwind was based on sugar how do I return this product for credit?
Hi Mike – So sorry for any confusion. Please send us an email at supportcrew@tailwindnutrition.com and we can help you out. Thanks!
Leading up to my longer races, I’ll have a 24oz bottle of water with two scoops of tailwind, is this good for my body or should I be eating kale and broccoli leading up? I basically fuel with tailwind a day before the race cause I feel like it’s easier for my body to break down on race day than eating pasta or other carbohydrates the night before.
Hi Antonio – During periods of inactivity, like the time leading up to a race, complex carbohydrates, like broccoli or kale, are the best type of carbohydrate to consume. Endurance Fuel was designed to be used during exercise, as opposed to before. However, you can certainly have a few sips right before your race to top off glycogen stores if desired. Hope that helps!
This is great! Thanks for sharing this with the racing public!