- How much does it cost ?

For a correct device, expect from 200 € for a bike, 300 € for an elliptical trainer and 500 € for a treadmill.

- Am I really going to use it?

"Bike, elliptical, treadmill, you have to know the machine, check that you feel good on it , so do not hesitate to test it in a gym or a friend, 2 or 3 times," warns Thierry Bredel *, sports coach.

- Which device to choose?

It all depends on our objectives: if we are soft from everywhere, we put on the elliptical, which makes work simultaneously arms and legs. To refine its legs, nothing better than cycling. From 8 kg overweight , the treadmill is preferred in an inclined position.

- How fast should I train?

It is planned 2 to 3 sessions of 10 to 15 minutes, the first 2 weeks, the time to put in the bath. Then, they are gradually extended by 5 minutes. The goal ? Arrive at 3 sessions of 45 minutes per week, 1 day out of 2.

- What to do to get results and stay motivated?

"We have to constantly " jostle "our muscles . We practice a session on an intensive rhythm for 30 minutes and, the next time, we work in split: 15 minutes on a slow pace and the rest of the time on an intensive mode, "advises the coach .
The first month, we do not exercise every day. The effect of aches can quickly discourage. It takes 3 to 4 months of training to redraw its curves.
But the first results are not expected: you will feel more toned, lighter and less tired. And under the effect of endorphins, which are triggered after 30 minutes of activity, you will become more assiduous.

* Author of the book "Practical guide to bodybuilding", ed. Marabout, 7,90 €.