IMO, it depends upon your fitness level. Last time I was at Curves, I didn't last long as none of the machines were adjustable. No progression was possible.
Circuit training is great, but as you get more fit, you will need to up the weights in order to prevent the dreaded plateau
Get rid of 30 pounds
10 pounds gone - Buy a bikini - DONE!
20 pounds gone - Buy slinky cocktail dress
30 pounds gone - Buy size 4 pants
Life's journey is not to arrive safely at the grave in a well preserved body, but rather to skid in sideways, totally worn out, shouting, "Wow, What a Ride!!!"
| Pounds lost: 12.0