Can you name some needs of human ?

Humans need food,water,oxegen,and shelter, sleep are just a few of many.

Explanation:

Humans need food and to gain energy and nutrients , sleep to replenish energy used, shelter to keep safe from harm, oxygen to breath and sending the counter reaction of breathing out carbon dioxide and plants bringing oxygen back into the world, and water to keep your body working you should on average day have 8 glasses of water.

to increase speed you need to decrease frictiona dn drag hense why sprinters wear tight track suits to keep tight against there skin to keep away from wind and decrease the amount of drag you are carrying.a swimmer will wear the tightest swim suit they can possibly fit into (i was a size 28 swim suit at meets i wore a   size 23) why? because the tighter your clothing is the less drag and negative force you have. the heavier the clothe the slower and more wind gets caught. cotton tends to hold onto alot of sweat and water making it slower then say a track suit (no idea what they are made of but they are really comfy around your answer )