Pick up soccer games

Every Sunday for the past month or so the boys and I have go to the local soccer complex to play a pick up game for about two hours. Sometimes I have only one of two adusts, other times there there are three or four or more. The first time I played I was out of breath halfway through the game. For the next few games my legs and feet hurt so bad I could barely walk for days afterward. Slowly it's been getting better. I am not a good player, but I do have fun.