As a Zumba® Fitness instructor I find the Halfbike a superb workout combination. Riding a Halfbike is a bit strange and not really easy in the beginning but once you get used to it you'll never regret on purchasing one. Halfbike is every cent worth it. It's really - really - really FUN !
So for those who doesn't have one yet. Try the Halfbike. And you'll see :-)
Thankful and so glad for this wonderful invention !!!