WORD SPIRAL

Starting from 1, fill in the grid clockwise with four-letter words. The last letter of each word becomes the first letter of the next to reveal a system of exercises.

1. Unable to hear 2. Be unsuccessful 3. Plenty

4. Chair 5. Armoured combat vehicle

6. Be aware of 7. Twist out of shape 8. Mountain top

9. Pottery oven 10. Short letter 11. Recedes 12. Hotpot 13. Homeless child 14. Petty lies 15. Male deer 16. Festive occasion