Which of the following does long-distance running raise in the body? A) VO2 max level

B) Blood sugar level

C) Blood pressure

D) LDL cholesterol

When you're running long, you're developing greater aerobic endurance so your body doesn't have to work as hard to attain the same performance level next time. The long runs strengthen your heart and open your capillaries, sending energy to working muscles and flushing waste products from fatigued muscles. So its D

Making sure the equipment is cleaned daily and insuring proper hygiene is kept up with the working staff.

They need to contract and relax