Originally Posted by
Machka
When "they" recommend 90+ minutes of exercise a day in order to lose weight, "they" aren't kidding around. If you want to lose weight, you've got to get active ... really active.
No. 40 minutes 4 times a week will do it if you use HIIT or a similar protocol. Assuming that your heart will take the load of interval training at close to maximal effort, which probably isn't true of a lot of people who most need to lose weight:
http://www.exrx.net/FatLoss/HIITvsET.html
Plus you need a pretty high motivation level to take the pain...