The following is not really a problem but bears mentioning: Very often when someone enters the first jhāna, their breath becomes very rough—there are short, sharp gasps that are very unlike the subtle breaths while in access concentration. This is totally normal! Once the pīti and sukha start rising, don’t worry in the least what your breathing does—it quite likely will change noticeably. Furthermore, your breathing may not settle back down until you move on toward the second jhāna.
