Finally after 4 months after my wife's shoulder replacement Surgery she was able to ride the beast again. she could only handle three miles one mile to see our granddaughter then to the trek store then the grocery store and back. today she did 5 miles we rode to a Chinese place for lunch and then home 3 miles. she was really worn out but I was pretty proud of her. I had already done 30 so she was lazy today Hope to take her riding every day and she will improve. I put some soft tires on the bike so it is not has bumpy and kept the speed down and watched all the small bumps as they can hurt her shoulder.