Well, it depends.
If you want to get buff and increase muscle mass you will need to use the weight loss product 2 times per day for at least a month.
If you want to lose weight, you can use once per day for the same period.
The flex belt has clear instructions that come with it, so you should be able to determine what the best frequency for your purpose would be.
After the first month, when the first results start showing, you can stop using on a daily basis, but increase the frequency levels a bit.
Increase the frequency and intensity each week by a couple of notches and you should get impressive results.
You will also to check the official forums.
Long time users of the flex belt developed interesting and very effective programs that get the results faster.
That is a great thing about this weight loss product, it has quite a large community of users behind that always come up with new programs to use the belt with.
These weight loss programs focus on different areas and most of them get the best possible results from the flex belt.
The nice thing is that some of these users are actual professional trainers, so they know what they are doing.
You can ask them some questions about this fitness product.
Everything about this is free, so make sure to check that as well.
You might even be able to develop your very own program with the flex belt.