well for example in my physical training the general rule of thumb in order to build muscle is that u have to attack the exercises with focus and high intensity
the people i study from say that the workouts should not be too long if you're specifically looking to build muscle, b/c if it is long then perhaps u are not working out at a high enough intensity
they say the ideal range is 45 mins to 1:30, but i also read if time is an issue anything lower is fine too as long as it's focused with good to high intensity, but keep in mind if u train more u will get more results mathematically speaking, if u train less but still good to high intensity u will still get results but less. at the end of the day reducing 10 mins of just hanging won't change much just as long your routine is done with effort, focus, and intensity. it may be even better to train a bit less in terms of time for gains or perhaps your body can handle more training for extra gains, i mean u need to experiment with it and figure out your schedule or if your body has more energy or motivation to do more PE regardless of what type of PE exercise it is. but anyway u still have a nice routine, it's definately not little. u know sometimes less is more if it's done right, other times more is better, u just gotta experiment
and as rocky said, the exercises should not be so easy, u do have to push through discomfort and test your limits a bit at least. i mean u should back off when it's a bad type of pain that may be injurious, but if it's a good type of pain that u can still withstand then hold or push through it as much or as long as u can
there's a saying in my physical training that i think is probably true and somewhat correlates with PE as well:
1 good rep is better than 20 bad reps
