Your pre-workout meal is just as important as your post-workout meal. You need to make sure you fuel your body before your workouts. Training fasted is not optimal for muscle gains. Without adequate fuel your workouts will not be as productive or intense as they should be.
Definition of vitamin for English Language Learners. : 1  a natural substance that is usually found in foods and that helps your body to be healthy. : 2  a pill containing vitamins.
biochemistry. noun. 1  The study of the chemical substances and vital processes occurring in living organisms; biological chemistry; physiological chemistry. 2  The chemical composition of a particular living system or biological substance: viral biochemistry.