Problem is you are actually fighting against yourself if you want to gain weight and get stronger. What you are doing is trying to push up your lactic system.
I hear you there, but the truth is I don't need to gain weight, just can't lose it. But doing what I'm doing will undoubedly slowly add weight. But slowly. Not even trying to get stronger, but it will of course happen.
I'm just feeding the metabolism a good, healthy diet, and working out like I've described. I know I cold go for bulking and lift heavier, it sure seems like I can get results like I did when I was younger, they just come a little slower and need more recovery.
My only goal, and I guess I should add to this or rethink it, is to not lose weight. I have that under control. Turns out I'm pretty healthy now, not counting the injuries.
So I should rethink those goals and even if I'm not trying to gain, your point is well taken.
I guess another goal is to get over 60 seconds and closer to 90 at the weights I'm currently lifting.