The answers to the clues below will have something in common.

1. Renege on a commitment
2. Worry excessively
3. Talk way too much
4. Meddle in the affairs of others
5. Watch carefully
6. Gain an advantage
7. Golf pro's tip, perhaps
8. Insist forcefully
9. Listen sympathetically
10. Pleading position
11. Keep your distance from others
12. Childhood promise gesture
13. TV image of a frying egg
14. Stay connected to something- even from a distance

Answers:

1. Back out
2. Pull your hair out
3. Shoot off your mouth
4. Stick your nose in 
5. Keep your eye on
6. Get a leg up
7. Keep your head down
8. Put your foot down
9. Lend an ear
10. On your knees
11. Stay at arms' length
12. Cross your heart
13. Your brain on drugs
14. Keep your finger in 

Each answer contains a body part.