If it's not time or childcare that's holding you back, it could be you don't think you have enough discipline. Sometimes, though, the problem is simply not being realistic in your goals, Morgan says. Time of the day is a big impediment.
People have the best of intentions, but they set themselves up for failure.
A key to getting started and then staying motivated, Hoch says, is to find something you really enjoy. If you've never cross country skied and you buy a Nordic Track, you're not going go to enjoy it. Keep that in mind when buying exercise equipment, too. Only buy it if you know you'll use it. If you can't stand sitting on a stationary bike, it's not for you.