Question: how many calories should you eat before a workout?
Answer: “But in general, people like us who are going to spin class or running really only need 1800-2000 calories a day, and snacks are usually only 100-300 calories each.” If you're a few hours out from your workout, aim for the higher end of that range, says Rizzo, “If it's only 30 minutes before, it may be just 100 ...