Hi , when doing a hamstring stretch is it bad to feel the stretch at the back of your knee? Was watching a YouTube video saying it was bad to feel stretch behind knee.
By the way I like how your studio is coming along, though is has been puzzling me as to why you placed in the centre of your garden rather than to one side.
One other question, when keeping my back straight what prevents me from bending more than 90% at the hips? For example, sitting on floor with legs out straight, back upright and trying to reach forwards towards feet with back straight.