With new exercises invented every week, new gurus trending by the day and a fresh study that contradicts all the other ones released every time you think you’re getting the hang of things, it’s easy to think that fitness is confusing – but it isn’t.

The fundamentals stay the same, and the science is pretty well agreed – so by simply arming yourself with a few basic facts, you can step into any gym forewarned against whatever fresh nonsense is being preached. These are the 10 biggest myths in fitness.