This instructional video resented by Lizzy Williamson (author of 'Two Minute Moves') shows a very simple way to exercise your tummy muscles while sitting on the couch and watching your favourite tv show.

So often we get to the end of our days, crash on the couch and haven't managed to get in any exercise.

We're too busy, tired or hate the idea of going to the gym. But many of us spend a lot of time complaining about our tummy areas as we spend a lot of time crashed out on the couch.

The good news is that you can work your core in a fast and super-effective way at the same time as you're binge-watching your favourite tv show or even on your phone.

Here are three moves to work your core in only two minutes without even having to get up off the couch. Presented by Lizzy Williamson. Author of Two Minute Moves