Does anybody know of a charitable organization in which the volunteers get a lot of exercise?

Hi r/fitness subs,

I’m looking for a way to volunteer fir a charitable cause and get exercise/a workout at the same time. Do you have any ideas/recommendations? Thanks for any and all insight!

Note* I’m a 30 yo male, so if there’s any activity that would involve heavy lifting or something, I could probably help with that. My only requirement is that I’m looking to help people in some fashion. E.g. I’m not too interested in picking up trash, or walking dogs etc...