How long should you use a rowing machine each session to see quick results if someone wants to lose 2 stone when they are 13 stone?

Answer 1

First you should make sure it is healthy for someone of your sex, height, and body type to lose that much weight. If you are currently overweight and can safely lose 28 lbs, then this is feasible and will likely take between 4 and 6 months.

First you'll need to assess how many calories you burn during an interval of exercise on a rowing machine. Most machines will tell you how many calories you've burned during a session. One pound of fat is about 3,500 calories. If you burn 100 calories in 10 minutes of rowing, and you row for 350 minutes a week, then you'll lose 1 pound a week just from rowing.