Across
- 2. 1 min of pushups, hold the plank
- 8. working more often and harder
- 9. running, swimming, biking
- 12. how hard
Down
- 1. stretching, yoga
- 3. how often
- 4. bones, muscles, tendons
- 5. making you work out more challenging
- 6. weight lifting, bench press, pull-ups
- 7. how long
- 10. an exercise to increase your heart rate
- 11. which exercise