Hint: Gym workout
The answer to this puzzle is:
1. WEIGHT
2. TRACK
3. POOL
4. YOGA
5. CYCLE
6. LIFT
7. SWEAT
8. BARBELL
9. MUSCLE
10. COACH
11. JOG
12. SITUP
2. TRACK
3. POOL
4. YOGA
5. CYCLE
6. LIFT
7. SWEAT
8. BARBELL
9. MUSCLE
10. COACH
11. JOG
12. SITUP