For fun I basically spend time with my niece and my son. We go swimming and they have a blast hanging onto my arms while I run back and forth under water singing the theme to the Rocky movie while they get dragged behind. Running under water with 2 ten year olds hanging on to you is aa pretty solid workout, LoL!
That does sound fun. Running under the water is alot easier on the joints but there is nothing better for the old mustles than wrestling with kids in the water. I used to get a great workout when my kids were 10 too. Its great fun fo sho. Thanks Truthseeker. ;)