Related:

• Pushing 40 is exercise enough.
• I get enough exercise pushing my luck.
• Develop a close, personal hatred for chlorine. It's bad enough having to drink i
  imagine having to *live* in it. -- Forty-two things to do as preparation for life as a mermaid....
• Programmers do it by pushing and popping.
• Pushing back the limits of common sense
• The student is in the pudding as an exercise.