The Kids and I had fun with this today. Boy didn't put much effort into it got a little over 30 secs lol. Daughter is in swim so she trains these went 2mins 47sec before I got her giggling so bad she collapsed, strategy haha. Got 3mins 2 sec. Wow my abs felt like they were going to bust out of the skin. Will shoot for 4 min mark soon. I'll have one of the kids take a video of it.