I do 6 days a week: run2 days; spin 1 day; yoga 2 days and metabolic effect 1 day

THis is me, but I have 6 days.

I normally do a spin class 2xs a week (then sometimes ams after), one day of the stair climber (approx 35min of that), and then the rest of hte days running for around 45 min at a time. On the weekends I fit in a long run or a bike ride. I save my strength training for the evenings and do some push-ups, squats, abs and some work on the exercise ball.

Admittedly, i don't do as much strength training as I should. I prefer cardio and am a distance runner.

Body Pump 3x a week. (Granted its 60 minutes instead of 45)

sprints/running up and down the stairs in intervals for 20-30 mins. alternate muscle group weights for the balance

All cardio.

wow, you all exercise alot.
i fit in 30 minutes most days (5 days) but not sure i can do more than that.

I'd alternate running for the full 45 minutes one day, with a full-body weights routine + 20 minutes of cardio the next day, maybe with a little stretching. I'd do M-W-F running, T-Th weights one week and then M-W-F weights, T-Th running the next week. Plus I'd do something active over the weekend.

(this is pretty much what I do - I work out 7 days a week, alternating running for almost an hour or weights + 30 minutes on the arc trainer. I also do yoga 2x a week.)

I do 45 minutes a day. 30 minutes of cardio (switch exercise every month - run one month, elliptical the next, etc.) and 15 minutes of weights, alternating upper body, lower body, and core. Gives me a great energy boost and when combined with healthy eating makes me look and feel terrific.

work out is two words when used as a verb.

I would split 15-20 min strength circuit, 20 min cardio, 5-10 min for stretching/cool down. For strength, I'd do 2 sets (one on each side for main muscle groups) of each of the following, and repeat for a full 2 circuits: 15 lunges, 15 push ups, 15 core exercise (I like the reverse crunch), 15 planks (right, left, center), 15 squats. Depending on how much time you have left, I'd move one to focus on one muscle group for the remaining time for that day. For cardio, I'd do either running or spinning (if you have access to the equipment) at intervals. My preferred is 3 minutes moderate, 2 minute push, 2 min moderate, 3 min push, 1 min moderate, 3 min push, 2 min moderate, 2 min push, 2 min moderate.

What are your goals? Fitness, weightloss, toning? At home or gym. Firm 45 min? What is your level? Athletic? What do you like to do? Team sports, individual sports, dance, yoga? Need more info to suggest anything worthwhile.

This IS me (except I am lucky enough to get 6 days a week)! I alternate days with cardio and strength. When I do cardio, I do a full 45 minutes with high intensity intervals. For strength, I do the big muscle groups (chest, back, hamstrings, quads, and core) and keep my heart rate elevated the whole time. For example: dead lifts, burpees, abs (anything), rest 40 seconds, repeat 2x. Then move on to the next. Very effective. I can post more details if you have specific questions.

What would your program be? (Or rather what should mine be).