Overhead squats have validity just like all the other exercises , its just more upper body
For bodybuilding purposes? Not really, no.
If I'm exercising my lower body for example, then I want something that hits my lower body as much as possible, in a safe manner and to be able to focus 100% on my lower body. I don't want to do an exercise for my lower bod that targets my lower and upper body 50/50 and that all my focus is on "correct form" and "I hope I don't fuck up my spine" instead of focusing on the muscles and feeling/chasing the pump.
If not for bodybuilding purposes then for what?
What are you hoping to achieve from them?
Kinda like a timing chain or a vehicles distributor , the firing order is different on ohsquats and it will tire you out more with less weigh5
That doesn't sound healthy and safe for engines and that they'll gain anything from it (different firing order).
Good and accurate analogy then..