Originally Posted by Lost Soul

I have no answer and the time of a session doesnt mean anybody is right or wrong

Eastern bloc trainers do hours upon end with massive rests between sets
Lactic acid training can last 20-30 minutes with minimal rest
Sprint drills may last an hour

End of the day train to a plan, not a time and understand what you need to do to either grow, gain strength or shrink and go with that

Other than for the purpose of idle chit chat i see no logic in comparing the length of time spent in a gym.

For me, currently i do 9 sets max, i spend 10-20 minutes trying to worm my way into the pants of the receptionist and the other 30 minutes flexing my guns in front of everbody. I deem this hour to be very productive wholst others would think it to be a waste of time.