Starting dry statics again

I did my first dry static in a long time today. Man did it feel weird, it was like I had never held my breath before. I set my target at a modest "over 5 minutes" and managed 5:30 eventually. The cough is still bothering me and I couldn't do a really good breathup, since every deep breath would be interrupted by coughing, the same with serious packing. I didn't want to push it since I'm obviously not in full health. Hopefully this will pass soon so I can get back to "serious" statics :)

Like with earlier long breaks I noticed today, that while I can push 1st contraction relatively far, the contractions after that come with very high frequency and are much harder to handle. On my last hold I had 24 contractions in 50 seconds. Usually that would be less then 10. Also at 24 I was already feeling like crap. I guess for a pb I need to do a week or so of almost daily statics, but it's still good to have a rest every now and then.

Data:
FRC 1:00
FRC 2:15
FRC 3:00 (much longer than I was expecting to last)
4:40 (10x5:0:5, 10 packs, 6 contractions, 1st 4:15, felt like crap!)
5:20 (10x5:0:5, 10 packs, 20 contractions, 1st 4:25)
Empty 0:45
5:30 (10x10:0:10, 15 packs (had to exhale a bit after), 24 contractions, 1st 4:40)