don’t guess, OK, actually count. I’m going to say 50 even though I get short of breath by 30 some and I could, of course, do a few more if you offered me money.
so I mean how many with good form and not killing yourself.
I googled this question earlier this week and some folks were saying 2000 :eek: but I don’t know if they meant all at once. because eek!
I was very tempted to try this. Then I realized I would probably just hurt myself because I wouldn’t stop when I should.
keep in mind there are risks to sitting still 
Oh I’m not sedentary. Just had bad experiences seeing how many of an exercise I can do. For example, the time I ruined my shoulder doing something like this with burpees.
Wasn’t even that many. Totally not worth it.
I have no idea, but I’m certain I’d get bored before I got too tired to do another. 2000 doesn’t sound out of line to me.
Ditto for me. I’d rather go bicycling. I can bike for hours; never get bored with it.
I can do all of them.
oh, sweet mother, I couldn’t even do one burpee. you tried a burpee? are you 28?
what you want is the “how long can you bicycle thread” :mad:
I am putting down zero for you!
y’all are very bad at this. 
0 is close enough to all, I suppose.
At home, or sea level?
I was 40 at the time.
My guess would be at least several hundred. Two thousand doesn’t sound terribly crazy to me, but I’m a little out-of-shape at the moment. I can’t find the current world record, but I found one guy in 1979 who did 27,000 in a row.
You can put me down for zero, too. 
I don’t think I’ve done a jumping jack since high school gym class, and that was 50 years ago.
Well, I could probably do a few if I tried, but I have no inclination to find out.
None. My knees didn’t like them before I suffered a torn meniscus last year, and they sure don’t like them any better now.
I can do the turned-out ballet version though - eschappe from second to first or second to fourth - with no knee problems, so if I’m in a group class where jumping jacks are called for, I do those instead. I can do at least 20 of those, maybe more. Luckily I only take group workout classes at the small specialty gym where it’s known that I have a bad knee and have many years of ballet under my belt, so that kind of expect that. 
I don’t jump, bad ankles.
ballet exercises are so hard!!! - I have a season of Miranda Esmonde-White’s workouts and they kick my butt.
and I have a lot of arthritis in my knees so I am doing the jumping jacks as well as most cardio on a rebounder/mini trampoline.
I’m completely certain that I’d get bored before I got tired, because the number at which I would get bored is awfully close to zero. I’ve never been a fan of exercise for its own sake: I do things for other reasons, and some of those things I do happen to be exercise, but that’s not why I do them.
One. Two if the floor isn’t too unforgiving. After that, my knees and back will be Very Very Angry with me.
I do 50 a day as part of my regular workout.
I can’t even remember the last time I did one. Best estimate is that I could do more if I bound my chestal protrusions, since that bouncing is quite painful, but I couldn’t even guess how many before I collapsed.