What factors have been negative effects on fitness lifestyle?

Explain what causes the skin to burn in the sun? explain why people should avoid the sun if taking a photosensitive medication?

Amino acids are important to the body because they build carbohydrates proteins complex carbohydrates simple sugars fats

Define physical activity. question 3 options: bodily movement produced by the contraction of muscles planned and structured exercise the ability to perform rigorous activity all the above