I ask this question after a visit to the physio this week. I have been doing my squats (not religiously) but fairly regularly since I started running. When I was being given my exercises for the next two weeks he asked me if I could feel the burn. I had to admit that I didn't. He then changed me in to one legs squats and not only can I feel the burn but boy can I feel them doing some good.
I realise that I had got stuck at one level and not progressed and I have to say that's probably true for most of my Stregnth work that relies on body weight.
So do you all advance your Stregnth work as you go along and if so what have you changed?