Absolutely not! Stroller Strides is for Moms of ALL fitness levels. We meet for a warm up, then power walk, jog, or run to each exercise station. Most times the instructor will send the running moms on a longer path than the walking moms so everyone meets at the next station simultaneously. You exercise at the pace you feel most comfortable. But don't be surprised if you find yourself running a marathon before long, we like to encourage our Mommas do make new goals and excel them!