Milk

Milk, yoghurt, buttermilk and cheese before a workout are a strict no-no. Sugar in dairy products can interfere with the digestive process. But, dairy products are an excellent recovery food because they provide a balance of protein, fat and carbohydrates.
Orange juice

Think a fresh-squeezed orange before a workout is a good idea? Turns out a healthy option may not always be so. Orange juice has a ton of natural sugars that cause blood sugar crash and leave you tired and not in the right shape for a sweat session. A whole apple is a better choice before a workout, and orange juice is better off as post-workout food.
Pasta

Pasta is loaded with carbohydrates which can weigh you down during a workout. You shouldn’t eat anything that has high carbs before endurance activities. Increase carbs in your daily diet instead of around a workout session.
Cola/flavoured water

Cola, soda, flavoured water and artificial sweeteners are not easily digested by the human body and can have a loosening effect on you. Energy drinks that tout to boost energy and enhance performance are similar to flavoured beverages.
Fried food

Anything that is fried can take a long time to break down and be used for energy. You should avoid fried foods right before a workout. Even a fast food breakfast can break your performance by making you tired. Images:Getty