The American College of Sports Medicine (ACSM) lists Body Weight Training (push-ups, pull-ups, lunges, wal sit)
Zumba which they correctly predicted for 2012 is not in the 2015 list.

1. Body weight training:
   push-ups, pull-ups, lunges, burpees, planks, squats, ...
      
   See:
   15 Best Body-weight Exercises - Men's Fitness
   50 Bodyweight Exercises You Can Do Anywhere
   Ab Exercises
2. High-intensity interval training
3. Educated, certified, and experienced fitness professionals
4. Strength training
5. Personal training
6. Exercise and weight loss
7. Yoga
8. Fitness programs for older adults
9. Functional fitness
10. Group personal training
11. Worksite health promotion
12. Outdoor activities
13. Wellness coaching
14. Circuit training
15. Core training
16. Sport-specific training
17. Children and exercise for the treatment/prevention of obesity
18. Outcome measurements
19. Worker incentive programs
20. Boot camp