Originally Posted by dzhou01
I totally agree with all of you and am happy to learn that no strength training is needed since I don't enjoy that at all.
I can relate to that. ^_^
Strength training may not be essential, and swimming will increase strength. Still, weight bearing work is recommended to round out an exercise routine.
It helps build bone density, lessening the chances of a fracture. (And take your vitamin D, too.)
About two half-hour sessions per week, under a good trainer, should do the job. That, plus four days of swimming, might prove to be an ideal adult regimen.