The one time my mom watched a video of me deadlifting, she cringed with fear that I was going to hurt myself. In reality, though, you’re just as likely (if not more so) to get injured doing other physical activities. That doesn’t mean you should throw weights around willy-nilly. You still need to prioritize safety to avoid getting seriously hurt. Here’s how.
Lots of this can be applied to body weight exercises (yoga, Pilates). Form is extremely important in yoga – I really don’t like seeing someone’s shoulders pointing towards me, but their hips aren’t
This is why I recommend doing such exercises with someone who will watch and is knowledgeable – so you can get proper, constructive feedback.