Consider interval training. If you're a healthy adult, forget spending 30 to 60 minutes working out every day. Interval training, when done correctly, has a greater impact than long-boring workouts, and it takes less time too.
Interval training is not flat-out vigorous activity, like continuously running at full throttle, but rather, cyclic activity, going fast and then slow. Over a period of several minutes, you start out at a low intensity level, slowly building to a high intensity level, finally reducing to a low intensity level again. This cycle of peaks and valleys is then repeated a few more times throughout a workout lasting only 22 minutes. Not only is the workout short, but you only do it three times a week.
I realize the concept of interval training defies logic. Shorter workouts, less often, more beneficial? But yet it's true. Try interval training and you'll be amazed, I promise.