eli5 is there any difference between lifting actual weights and pretending you’re lifting weights?

Question

Like if I clench my fists and muscles hard enough and imagine holding these weights, is it pretty much the same?

In: Chemistry

Answer 1

muscle growth depends on progressive. The weight you life has to get heavier over time to see gains
If you were able to clench your fist harder every time, then you’d be on to something, but you can’t.