Answer:
Any iron or metal cleaning
Answer:Here
Explanation: Circuit training is a high volume but low resistance weight workout with 2-3 minute rest intervals involving cardio, and is focused on improving muscle tone and definition while also improving cardiovascular fitness. It is a popular way of working out, especially if you are looking for variety in your workouts.
Its between C and D for me.But I think D is the answer.
They time how long each can hold it up above their heads for, then compare the times. The longest time has the most endurance.
