The Most Harsh Foods and Drinks to Avoid Prior Working Out

 5.Smoothies
These sound great in theory as a way to hydrate and get nutrients at the same time. But in practice, they can be less than ideal. Some are packed with sugar and will give you only a short burst of energy before the dreaded “crash.” And depending on what’s in it, a single smoothie can have as many as 800 calories.

6.Flaxseed
This seed has all sorts of potential health benefits — some people use it to try to ease constipation or lower their cholesterol level. But it’s high in fiber and fatty acids, which aren’t what you want before a workout. So when adding it to your diet, pay attention to when you have it.