It all depends on the individual. Beatha breathing is indeed something powerful and my brother feels very tired for several days after doing it whereas I can do it several times a week. You just have to do what you feel it's good for you at your own pace.
Anyway, I came to give my feedback about the recent beatha sessions I have done.
I have been unregular for some times and I decided to come back to the program on a more regular basis especially to the beatha part if I lack time, as recommended. For information, I try to do the prayer of the soul each time before sleeping.
Last year, I tried to do several beatha sessions in a week to push forward and got interesting results that I posted here. Then, I slowed down and worked on the results.
Last week I did it 3 days in a row, each time before doing the prayer and sleeping. The 1rst night was a bit difficult since I spent several weeks without having done it, the 2nd times were better, almost "normal", and the 3rd night was nice.
After the last time, I woke up normally but when I put my left knee on the ground to do some stuff, it suddenly hurt like hell. I didn't understand why, but I'm still sure that I didn't get hurt in any way the day before. I took a look at my knee and they were some red marks and a small bump on my kneecap. To have this kind of injury I should have remembered an accident, a fall, or whatever, it even hurt while I was sitting or laying in my bed... completely weird... Today, it's far better, nothing anymore except my wandering about it.
The 5th night, I went to bed with only the prayer of the soul and I woke up 2 times during the night, totally wet in my bed. I mean, it was like when you get/got fever and that you are wet. In this case, you know that it's not the temperature in your room because if you pull off the sheets, you're too cold.
But I didn't feel bad, and I wasn't cold as long as I stayed under the sheets. I just woke up thinking "I'm wet... let's pull off a bit the sheets, hell no I'm too cold, ok let's stay this way and sleep" and a few secs later I came back to Morpheus arms. It happened a 2nd time on the same night (as far as I can remember).
In the morning, I woke up normally, dry, asking myself if I had a fever. But when you have a fever, sensations are different. You feel bad and you are cold which wasn't the case here.
The 6th night, I meditated focusing on my intention to progress towards the light/knowledge before doing the prayer and sleeping. While I was almost asleep, I clearly heard someone knocking on a door but I know it was not "real" and just in my mind. 1rst time I experienced that. I thought "who's there?", no answer or any sign. Yeah, sometimes, it's easy to think that we might be crazy ^^
Anyway, that's it, I just wanted to share this experience with you. Of course, don't hesitate to share your opinion or your own experience if something similar already happened to you.