I hear ya. Last year I started curling for the first time and was surprised how strenous the sweeping can be. The cool thing was that after curling for about a month, the nagging ache in my right shoulder that had been limiting my swimming for about a year went away. But the downside was that after about 4 months of curling, I developed some elbow tendonitis. So now I'm back swimming regularly to keep that in check