This year I joined the “half century club” and have been noticing more and more that when I wake on the morning after a hard ride the day before I experience a lot of stiffness. This didn’t happen when I was younger. Sometimes the stiffness is so bad that I need a massage to get relief. On such occasions, I usually have my partner do it, but she travels a lot for work, so sometimes I have to massage myself to make the stiffness subside. Is it just me, or have others noticed increased stiffness with age? Should I be worried, and is there anything I can do to prevent it? Thanks in advance.