I’ve turned 64. I've been a clinical social worker for about 30 years and currently work 1/4 time for a health related research study. I am fairly active (kayaking, camping, bike riding, flying stunt kites), but my swimming has suffered over the last year at increased difficulty with stamina. Greatly out of character for me, I used a good deal of the spring and summer to hand build a Greenland style skin-on-frame kayak. it was exhilarating to test my tenacity and creativity on such a concrete project.