But could get close.

I've always hated gym - mainly because I am very competitive and always push myself too hard, generally resulting in PAIN.

However, I have now decided to just concentrate on cardio fitness rather than weight training, and have gotten myself a heart rate monitor that integrates with the cardio machines at gym, so I can set a target heart rate and the machines manage the intensity for me, so no more overtraining!
Also, the machines have their own li'l TVs built on, so the mind-numbing boredom is alleviated too.

All calculations below come from the Polar F6 monitor

Yesterday was at gym for a total of 70 minutes.
Average heart rate 137 bpm
Calories burned 788
Time spent in 130-147 bpm target zone: 39 minutes (there was significant time above 147 as well. I am going to change my target zone to be 130-166 which is 70-90% of max HR)