I'm a weightlifter, but I include occlusion training in isolation exercises and some composites. I love it for the high reputation. Therefore, I have been visiting a personal trainer once a week. They make me do a bfr training that cuts off the outgoing blood transfer but allows entry.
I only do 3 kg weights when we do upper body workouts. Which sounds very, very pathetic, but they make me make curls with a 20 x 3 bar. Which, by the time you hit 15 reps in each set, 3 kg feels like 20 kg. You also have an incredible “pumping” feeling after the first set.
However, it doesn't seem like your coach is doing it correctly if you can't train for 3 days. Low-load BFR training increases the satellite cell group and causes the addition of myonuclears much more effectively than low-load training without BFR, and to a degree similar to heavier conventional training. They suck donkey balls, break and are not tight enough (too elastic) to make a real restriction of blood flow. You would cover part of the muscle mass because your quadriceps will grow, but almost all other muscle groups involved (buttocks, spinal erectors, stabilizers) will train too far from failure due to lighter loads, so they won't experience the same level of growth (if any).
I learned about blood flow restriction (BFR) training when I discovered that physical therapists use BFR to increase the rate of muscle hypertrophy in injured limbs. There is a study showing better hypertrophy, however, most coaches agree that it is not better for hypertrophy than traditional training and instead it is simply similar. Its effects are very similar to those of heavy training, and O'Halloran even showed that you can replace a large amount of heavy training with low-load BFRs and get the same strength gains. Every time someone mentions this new technology they've heard of, like this blood restriction, I really think it's ridiculous.
BFR can decrease muscle atrophy when you're injured and speed up strength recovery when you can get back to training. In addition, the proposed mechanism of metabolic stress and hypoxia (oxygen shortage) as drivers of muscle growth is unlikely, given that the training was performed for series of 8.I did the Seth Feroce method of leg training with blood flow restriction in which you go to a leg press and lift your legs up with a lot of plates loaded on each side. To my knowledge, the evidence doesn't really show any particular advantage for hypertrophy: it causes growth, of course, but no more growth than regular training. BFR training has proven to be quite disappointing for people with the sole goal of building muscle, as noticeable increases in muscle growth in addition to heavier training have not really been manifested (with the exception of additional breast growth in the Yamanaka study).
The bottom line is that most research shows that BFR training produces comparable gains in strength and hypertrophy than traditional training.