Acai Berry Reviews

I started exercising with a friend about 4 weeks ago. We have been going several times a week...spin class on Monday...zumba on tuesday & wednesday...cardio & weights on thursday...and sometimes zumba on saturday!

I have gained almost 4 pounds since we started and I don't understand why!!! I was maintaining my weight just fine when i wasn't exercising...and Im not eating that differently now!

Any advice???