Fitness Center offers free group exercise Published Oct. 21, 2009 By Public Affairs DOBBINS AIR RESERVE BASE, Ga. -- Anyone needing an exercise outlet can stop by the Dobbins Fitness Center every Monday and Friday at 10 a.m. The fitness center provides a television, DVD player and exercise videos. Group exercises may vary daily and weekly. No more excuses! Come in and get fit. Exercises are appropriate for all fitness levels. Remember! Every MONDAY and FRIDAY at 10 a.m.