Anyone who can do the splits and come back up on the backbeat as James Brown and Prince can has my eternal respect. Prince who is a genius of the highest order can come back up while singing and playing the guitar.
Aside from what it teaches you there is simply the indescribable degree of peace that can be achieved on a sailing vessel at sea. I guess a combination of hard work and the seemingly infinite expanse of the sea - the profound solitude - that does it for me.