I just tried to do some push up/press up after a 5 minute ab workout (which was a struggle) and I only managed to do 5. This is pretty poor.
What's the best way to improve on this? I think the average for my age is 35 push up/press ups.
I'm unable to do chins/pull ups due to poor strength levels.
Hey, I'll say the obvious: you've got to build up muscle and strength. You'll slowly be able to improve both but be patient with yourself while you're on this diet.
It is very tough to put on muscle in a low calorie environment and that's what your current regimen is. So imo your goal should just be to maintain your existing muscle mass, lose the pounds and then afterwards: get the protein up and begin to put on muscle.
Btw, low carbs give you low energy issues, so this probably contributes as well.
I guess what I'm saying is, once you're off the low cal environment, ask this question again and we'll get you going. It's just a matter of protein, calories and a good workout.