What kind of workout/exercise do you do?
How often do you do it?

I had been doing group X classes at 24 hr, but I haven't been able to make the various times. So I took elements of the Body Pump class (no much rest, and high reps) and do weights (mostly free weights/dumb bells). I am trying to do this 3-4 times a week. One day I will lighten it up a bit.
So it looks like this:
5 min warm up on treadmill or elliptical
Chest & Arms 12.5-15 lb dumb bells (Bench press, bicep curls, triceps) for 5 minutes with nothing more than 20 seconds rest between sets for all stations
Shoulders & Back with 40 lb bar bell (dead rows, wide rows, clean and press) for 3-4 minutes
Legs (leg press or squats on sled) for 3-4 minutes
Calf press for 2 minutes
Rows (shoulders/back) 1-2 minutes
Cardio for 10-30 minutes depending on time allowed.

I also do some Zumba.

I'm not really a class person; I tend to enjoy my solo exercise. I exercise 5-6 days per week, for about 40-60 minutes at a time. Sometimes it's a bit less (even if I can only get to the gym for 30 minutes, I'll go), sometimes a bit more (when I get there early enough, I stay for 75 minutes if it's a strength day).

On strength training days, I do abs and then a circuit on machines, and I'll finish with 20-30 minutes of cardio (treadmill) if I have time. On cardio only days, I walk on the treadmill. I start with a low incline (2-3%) at 3.0 mph for a warm-up, then increase the speed to 3.3 mph and ramp up the incline by 1% every 5 minutes (or faster if I'm doing a short workout). I increase the speed to 3.5 mph for the last 5 minutes (I'm usually walking on an 8-9% incline at this point), and then do a 5 minute cool down.

I like your treadmill routine! Great idea!!!

Thank you! It definitely gives me a good workout. I was never a cardio person (and I hadn't been an exercise person since high school), but the ramping up during my treadmill workouts definitely has helped improve my cardio fitness. My current routine is a huge improvement from where I started - 30 minutes at 3mph on a 0% incline was a real struggle just a few months ago.

Yes! Honestly, the treadmill is so boring to me. Today I was on it and I was adjusting speed to the music I was listening to (I was at a 0% incline). When 3.4 was "easy" I bumped it up to 3.6.... Then I hit a chorus I loved and I actually (for the first time) hit 4.0 and jogged! I did 1 min at 4.0 then 1 min at 3.4 then back up...I did it a few times. It was actually fun!

I
treadmill or outside.
If I'm on the tread, it's at 0 incline as I am trying to lose!
I run in intervals and work my way up. I am really slow b/c of previous back injury.
Currently, I am running 4 min-walk 2 min for 30 min with a 5 min warm up/cool down. Total of 40 min (12 min mile or 5.0-5.2 on the tread)
I run 2-3x/wk. Sometimes, I do 2-a-days.
In the a.m I'll run and at night, I'll Zumba.

I love Zumba and go 3-4x/wk

I play tennis as well! I just got started and it! I play with my best friend! We are NOT talented, nor graceful. But I burn about 450-500 cals/hr.
So, I don't really care how graceful I look

I'm going to start doing some ab routines--not Insanity or anything--my back couldn't tolerate that.
But, perhaps some plank or AbRipperX!

I am for 4-5 workouts a week. I run/walk with a girlfriend in the am or go to cross fit in the evening.

I'm doing P90X. I get up at 5am every morning for the sucker. I started exactly 13 days ago and haven't missed a day.

I have heard of that... I heard it's super killer. True? Can you tell a difference already?