I have been watching some of our guests in the gym of late and often detect and correct a very common practice involving the use of free weights, specifically dumbbells where they swing their arms freely with fast, loose movements.  So how important is proper form when using free weights?

10 minutes, that's all we're asking, okay, if you've been to MT, you know the magic number is 40 minutes of exercise 3-5 times a week (in your target heart rate zone, breathing hard but not breathless). A study in a new research field called "metabolomics" is showing evidence that 10 minutes of exercise increases metabolic changes up to one hour. Bonus if your already fit, you may get more benefits. 

The following is a quote from the AP article from which the study is cited: 

Shake shake shake. Shake shake shake. Shake your booty shake your booty. Who can forget K.C. and the Sunshine Band? Well, we’ve found another reason to shake your booty at Mountain Trek and it’s called Zumba!