That's the magic number to losing weight AND keeping it off.
Some years ago I was watching Dateline and they were following three people who had lost a significant amount of weight (30 pounds or more) and kept it off. What they had in common and what a medical study the show quoted showed: if you want to lose weight and keep it off, 90 minutes a day of working out is what it is going to take.
That's very different then the 30 minutes a day that was recommended for decades and more in line with the new government guidelines that say 30 - 45 minutes of aerobic activity at least 5 days a week PLUS an additional 30 to 60 minutes of additional physical activity a day (walking, taking stairs, housework, yard work, etc) for weight loss.
So how do you get 90 minutes of exercise a day into a busy work and home schedule?
Well ask yourself this: Do I watch 90 minutes worth of TV a day?
If the answer is yes - then you have 90 minutes to work out.
I recognize that it is not that simple but my point is that 90 minutes represents an hour long drama and a sitcom or three sitcoms or a Lifetime movie, so it is possible.
Practical Tips for Getting 90 Minutes Worth of Exercise a Day
1. Take the stairs. Stairs burn lots of calories. Instead of taking the elevator, hop on the stairs. Yes, even if you're on the sixth floor. The higher the better.
2. Park far away. You'll be amazed at how much walking you do when you don't park near the building you're trying to enter.
3. Take a page from Tracy's book and work out on your lunch hour (or half hour). A brisk walk or weight work out will contribute to the 90 minutes you need to make each day.
4. Get up early and walk, run or go to the gym. If you just don't have the time during the day to work out, get up early and make it happen. Yes I recognize that could mean 4 or 5 in the morning for some of you, but hey if you treat exercise like you do work then it shouldn't be a problem.
5. Go for a walk after dinner. It's simple yet effective.