Hit the gym anywhere from 3-5 times a week. Try to vary it up and take a cardio/body sculpt class when I have the time. Also try to take an abs class 2-3 times a week as well. The gym I go to has an indoor sand volleyball pit which is great. Running, jumping and moving laterally in the sand for a couple of hours is a great workout. Plus, I've met more women in the last year playing volleyball than I met in 15 years of playing softball!