Windsurfing Nutrition and Supplements

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Regatta day two. The race committee sends everyone out at ten, postpones for a wind shift, runs three races back to back in the afternoon and finally lets the fleet in at five. Somewhere in there, lunch was a squashed energy bar. Windsurfing makes it easy to under-eat: you wait for wind, then you sail until your arms give out, then it’s dark. This page is a short guide to windsurfing nutrition: what to eat day to day, how to fuel windy weeks and regattas, and which supplements are worth a look, with the safety rules first.

General information, not medical or dietary advice. Talk to a doctor or registered dietitian before starting a supplement, especially if you’re under 18, pregnant, have a heart, kidney or other health condition, or take medicines. Prices change often; the prices below are what we saw at the maker or a major retailer in October 2026. Back to the windsurfing hub.

What the research says

There’s a little windsurf-specific research. Olympic windsurfing is a high-intensity endurance sport: pumping the sail more than doubles oxygen use, and reviewers say multi-day regattas call for particular attention to nutrition. A field study of 10 amateur windsurfers at regattas in their competitive season found they ate less energy than they burned, drank too little, and were low in vitamin D and calcium. One case study of a world-class windsurfer tracked metabolic changes during on-water training, but it’s a single athlete. So the best guide is general sports nutrition from the American College of Sports Medicine (ACSM), the Academy of Nutrition and Dietetics and Dietitians of Canada.

Everyday eating for windsurfers

• Carbohydrate for sailing days. ACSM scales it to training: about 3 to 5 g per kilogram of body weight a day for light days, 5 to 7 g for about an hour a day of moderate exercise and 6 to 10 g for 1 to 3 hours a day. A windy week or a regatta is a high-fuel week: rice, pasta, potatoes, bread, oats, fruit.
• Protein for back, shoulders and grip. ACSM suggests 1.2 to 2.0 g per kilogram a day, spread through the day, and about 15 to 25 g after a session. For a 70 kg sailor that’s about 85 to 140 g a day from eggs, fish, meat, beans, yogurt, milk or tofu.
• Calcium and vitamin D. Dairy or fortified alternatives, leafy greens and oily fish, given the regatta study’s low intakes. Sunscreen and wetsuits can still leave some sailors low in vitamin D; a blood test tells you.
• Fluids and salt. Drink before and after, and between runs on long sessions. Timing is on the Session Day and Race Day page.
• Pack food. A cooler with sandwiches, fruit, rice cakes and yogurt beats the beach kiosk on long days.

Fueling windy weeks and regattas

• Before you sail: a familiar meal 1 to 4 hours before, with carbohydrate and not too much fat or fiber (ACSM): oatmeal with fruit, toast and eggs, or a rice bowl.
• Long sessions and race days: ACSM and the IOC consensus suggest about 30 to 60 g of carbohydrate an hour for 1 to 2.5 hours of stop-and-go exercise. Between races that’s a banana and a handful of dates, a jam sandwich, or a bottle of sports drink. Some racers carry a gel or bar in a vest pocket for long waits on the water.
• Waiting for wind: eat a real lunch while you wait instead of skipping it.
• Evenings: a full dinner with carbohydrate, protein and vegetables refuels you for the next day. On trips, alcohol and late nights hurt the next session more than most sailors admit.
• Cold-water days: warm drinks and a hot meal after the session help you warm up.

Teen sailors need enough total food to grow and sail. A UEFA expert statement on young athletes says general use of supplements should be restricted; food comes first. The American Academy of Pediatrics says energy drinks have no place in the diets of children and teens, and recommends against creatine for young athletes. More on the youth windsurfing page.

Supplements: the safety rules first

• Food first. The International Olympic Committee’s consensus statement says only a few supplements have good evidence (caffeine and creatine among them).
• Contamination is real. In an analysis of 634 supplements from 13 countries, about 15% contained undeclared steroid precursors that could cause a positive test.
• Choose third-party tested products (NSF Certified for Sport, Informed Sport or Informed Choice). They lower the risk but don’t remove it.
• Drug testing. iQFOiL windsurfing is an Olympic sailing event, and national-team and international racers can be tested under the World Anti-Doping Agency (WADA) Code. You’re responsible for everything you take.
• Nothing banned. No DMAA, SARMs or prohormones, no proprietary blends that hide doses; never exceed the label.

Supplements windsurfers commonly use, compared

Product	In one serving	Certification	About (Oct 2026)	Per serving
Nuun Sport	300 mg sodium, 150 mg potassium, 1 g sugar	Informed Choice (maker)	$7.49 / 10 tablets (maker)	about $0.75
Skratch Labs Hydration	400 mg sodium, about 20 g carbs	NSF Certified for Sport (maker)	$23.95 / 20 servings	about $1.20
Thorne Whey Protein Isolate	21 g protein	NSF Certified for Sport	$65 / 30 scoops	about $2.17
Thorne Creatine	5 g creatine monohydrate	NSF Certified for Sport	$44 / 90 scoops	about $0.49
Klean Multivitamin	2 tablets; 1,000 IU vitamin D; no iron listed	NSF Certified for Sport	about $46 / 30 servings	about $1.53

Electrolytes are the most useful extra on hot or long days; Nuun Sport is low in sugar, and Skratch Labs adds carbohydrate. Protein powder such as Thorne Whey Protein Isolate is handy on trips where protein is hard to find. Creatine is one of the most studied supplements for strength work in the gym; some adults gain 1 to 2 kg, mostly water, and it isn’t for under-18s per the AAP. A multivitamin such as Klean Multivitamin is a safety net, not a performance aid. Caffeine is well studied too, but it can cause jitters, a racing heart and poor sleep; anyone with a heart condition, who is pregnant or sensitive should check with a doctor first, and kids and teens should skip energy drinks. Compare more in our best electrolyte powders, best protein powder, best creatine and best multivitamins guides.

After-session meals are on the windsurfing recovery page; kiters have their own kitesurfing nutrition page. A registered dietitian, ideally a board-certified specialist in sports dietetics (CSSD), can build a plan around your sailing.

Windsurfing nutrition: FAQs

What should I eat before windsurfing?

A familiar meal with carbohydrate 1 to 4 hours before, low in fat and fiber (ACSM), such as oatmeal with fruit, toast and eggs or a rice bowl. Bring a snack for between sessions.

What should I eat during a regatta?

Small, easy carbohydrate between races (fruit, sandwiches, rice cakes or a sports drink), aiming for roughly 30 to 60 g an hour on long days, plus water and electrolytes. Eat a real meal while waiting for wind and a full dinner each evening.

Do windsurfers need supplements?

Most don’t. Food covers the basics; electrolytes on hot, long days are the most useful extra. If you choose any supplement, pick a third-party tested one and check with a doctor or dietitian.

Are Olympic windsurfers drug tested?

Yes. iQFOiL is an Olympic sailing event, and athletes at that level can be tested under the WADA Code. Third-party tested supplements lower, but don’t remove, the risk of a positive test.

Is creatine OK for teenage windsurfers?

The American Academy of Pediatrics recommends against performance-enhancing supplements such as creatine for young athletes. Food, sleep and good training come first.