It depends, if you need to slow a bit and rest, it can help you become calmer from blocking out stimuli, but it won't necessarily make you stronger. If you mediate in a plank form or on a handstand regularly, then that will make you stronger but you might not be calm in maybe the first month of constantly doing that. If meditation doesn't help you at all or you don't like it, consider it bad and seek something that does help you.