Question

q43. why should you always lift with your legs and never with your back muscles?
as this can overstress your back and lead to disc injury
its easier to lift with your back
lift with either. it doesnt cause injury
because its easier

Explanation:

Lifting with the back can put excessive stress on the back muscles and spinal discs. The back muscles are not as well - equipped to handle heavy lifting in terms of strength and biomechanics compared to the leg muscles. Leg muscles, especially the large thigh muscles (quadriceps and hamstrings), are stronger and designed for generating force. Over - stressing the back can lead to disc injuries such as herniated discs.

Answer:

As this can overstress your back and lead to disc injury.