Re: Groundstrokes: your arm should feel like a dead piece of meat?
I had almost the same conversation with my coach a year ago and I tried a lot of things out until I realised that I better follow what is the most comfortable for me. Instead using my legs for my groundstrokes, I just tried to hit them as relaxed as I can. By this I mean I don't use any muscle and hit it the way I hit the ball in table tennis. I let my wrist go free a bit, tho the rules say wrist should be fixed during shots. So my wrist is rather floppy. With this improvement, I can hit forehand a lot more precisely and alot flatter and stronger. Sounds weird but true. It will take a bit of time to get used to it,like 2-3 weeks of practice but will be a great feeling when you finally finds 'that' feeling.