The Hamstring Slider Curls are a great test to see if you have good connection with your hamstrings. If you have hamstring, back or knee issues it's incredibly common to not be able to do this drill at all! Luckily, simply working on it can be a massive key to fixing a lot of those issues, and in this video we show you how to build it up from zero. If you don't have furniture sliders available, using cushions on a wooden/hard floor works as a substitute! Even though it's challenging, it's a natu