I be a 51 year young man and need a way to firm my upper chest and arm . I must say I read all the review good and bad . well let I tell you after 1 week with a 1 day break every 2 day , I sure can tell that I have really do some work on my muscle . but it hurt so good . it be very addicting and I do believe that this will do just what I expect of it . and yes the first use be a piece of cake , but beware it will sneak up on you for sure . Got my Motrin handy , , LOL . I think that the quality be just as describe and be not at all disappointed . look forward to the result I will get , I swear there be a slight change in my upper arm appearance already . I be happy and would recommend it to any man look to start out with a low impact approach to a work out regimen . it be give I a new out look on myself and also a drive to go on further down the road into a weight lifting workout program . look out boy here come Daddy .  Shake Weight for Men Dumbbell