I have the problem of becoming lethargic when sitting in the same place for 20 minutes or longer. Therefore, I get up and walk around a lot while playing poker. Helps to keep me on my toes. This is one of the things that computer poker is great for. I'd look awful weird if I got up and walked around the casino between hands.In my case, I think I lack more patience for the big tournaments. Since many times I find myself leading chip but after a certain time my concentration drops and I get tired. Later in my game I am very happy with the level. But there are always things to learn!