breathe with a long cycle. Meaning in for ## count. Than hold and exhale and hold again for the same count. Keep it as long as you can and than some and as you reach the point where it’s really uncomfortable try to relax the body. For me it’s a lot of tention in the chest and shoulders and the last time I did this today I felt suddenly my hips relax as if they were hungfrom my shoulders and could move anywhere. Try it and be mundfull not to hurt yourself. Be aware of what you can and cannot do. Frustration is your ego wanting to fit a picture or get a better greade. Just do the work and enjoy it.