Match the health idioms:
1. An apple a day [blank_start]keeps the doctor away.[blank_end]
2. As fit as a [blank_start]fiddle.[blank_end]
3. Laughter is the best [blank_start]medicine.[blank_end]
4. Feel on top of [blank_start]the world.[blank_end]
5. He is out of [blank_start]shape.[blank_end]
6. She is as pale as [blank_start]a ghost.[blank_end]