Stand up paddle boarding (SUP)Chester River Dee Group or individual instruction/trips and fitness ,the fastest growing adventure sport.
The basics are not difficult to learn and with a few hours coaching, most people can stand up and paddle several miles.

 Paddle boarding is fun and one of the best core workouts as practically every muscle is being used but the sport is also low impact for anyone with joint or muscle pains, as there are no heavy movements, so someone can paddle for hours, burn over a 1000 calories and not ache the next morning.