Product review (5 stars): Great Bodybuilding Tool! Time-saving invention.
The best arm and chest workout, period. The resistance of two workout clothes and 3 gal. water is great for arm conditioning. No need to push weights and waste money on dumbbells. Let's do the math: 3 gal. water gives you 25 lbs (excluding clothing). Not enough, put down 5 gal water to give you 40+ lbs. Sure, you are not lifting the entire bucket up. But the pressure generated from forcing the air/water through the outlet is enough for you to lift the bucket up. Let's assume u exert the same amount of moment in the push and pull motion. That means if you do this fast, you burst 30lbs * 2s (133 newton) in a distance of 2 inches, which is equivalent of 6 joule or 1.5 calorie. If given 5 minutes of washing time, u can repeat this motion for 100 times (assume 4s/cycle). So u exert at least 225 calories not including consumptions from muscle coordination.
Obviously, u can do this faster and burn more calories. But the importance is the gradual increase in pressure that is similar to resistance training. Above all, u get your daily laundry done. How practical! How come I never heard of this product till I moved into a condo without wash machine? Hauling a bag of laundry in Boston winter is no fun. You spend 5 minutes on clothes every two days and you don't need to visit a laundromat for months. A great time saving invention that is unparalleled.