Name three methods a person can take to protect their skin from the sun. also, list one benefit that exposure to sunlight provides

Three methods sunscreen go in the shade and cover up benefits your skin absorbs vitamin D if you do not have enough vitamin D, you get rickets which is boney weird legs. Any of a group of vitamins found in liver and fish oils, required for the absorption of calcium and the precluding of rickets in children and osteomalacia in adults.

This is true. yes. indeed.

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle