Yo-yo dieting:  
A cycle of short-term changes in eating and activity. That leads to only short term benefits of weight loss or strength gains and results in landing in the same place or worse than when you started. 

Have you ever experience that with your diet or your workouts?

The first experience I had with Yo-Yo'ing results, was when I first started really working out in with Jay a friend/colleague/coach in High School. 

We'd meet up before lifeguarding every morning at 6am. 

He was older and more experienced with workouts than I was so I would follow the routines he had in place.

And I can remember being annoyed at how much stronger he was than me. 

Which of course means I pushed through the times I was at the gym with him, and then avoided certain exercises when I wasn't with him because I was embarrassed with how light the weight was that I was putting up by myself. 

Doing that led him to getting stronger and me staying the same or going...