[AlekseyKorzun]

Short work outs will produce the same result if they are performed within same time span day after day. You can mix the hours up for each work out but let's be honest... that would be too much of a hassle.

I don't think article is very scientific; 'hitting the gym' can mean a lot of different things to a lot of different people. They can sit in the gym, do cardio, do weights, do stretches, etc. Too many variables. Obviously if subject goes to the gym and does 20 curls before calling it quits there will be absolutely no benefit.

If you hit the gym during the lunch break or before/after work and throw cardio/stretching in (not just weights) you will be fine. Or simply do some good stretching here and there; problem solved.