Question

Which muscles contract and relax, while Lifting a heave object from the ground? ​

Answer 1

Answer :-

There are two groups of muscle sets which are involved in lifting, the biceps and triceps muscles when triceps muscle contract then biceps muscles relaxes that cause the straightens the arms when biceps muscle contract and triceps muscles relax then hand lift.

Answer 2

Answer:

There are two groups of muscle sets which are involved in lifting, the biceps and triceps muscles when triceps muscle contract then biceps muscles relaxes that cause the straightens the arms when biceps muscle contract and triceps muscles relax then hand lift.