I've been thinking heavily about moving aboard my boat and selling my house. One of the things I didn't want to give up was my bowflex. I actually haven't used it in about a year now (surprised ? ) but I liked working out with it over gyms...mostly because it was light and in my house. Anway...a thread a couple weeks ago stating it's good as a sailor to keep the upper body strong got me thinking about something, so I've been experimenting with a cheap effective way to work out while on a boat (or anywhere you want like in front of the TV).Most upper parts of the body can be worked out with dumbbells. I've been using two gallons of water (washed out plastic milk jugs). I start out using both in one hand and then alternate hands and then use one in each hand. You will be surprised at the workout you can get with just those two jugs of water. Not only is water free at most marinas and the weight is very adjustable, it doesn't take up much room in storage and can be used as emergency water supply too. If you feel like doing more strenuous workout, add another jug or two and combine them with a thick rope around the handles to make a heavy dumbbell.Another cool thing about this...it's mobile so you can workout anyplace or if you forgot your jugs *pop you can easily get some more when traveling ;D.JUGS ARE GREAT ;D