Most Reiki Master Teachers in the traditional Usui Reiki will strongly recommend a 21-day period between attunements. This is so that you can adjust to the reiki energies. I do agree with this for most beginners as this is the period that the healing crisis takes place. I do also tell my students that get my other reiki attunements to wait at least a week between the attunements but of course this is just a suggestion and that they know what they can and cannot handle energetically.
What is a healing crisis? It happens after an attunement where the reiki energies bring up all that does not serve your HIGHEST good. Most of the time you get sick or if you already are it gets worst before it gets better. I have gone through it a few times with even my other reiki systems. It is defiantly not fun, as it is never fun being sick as it is.
I tell my students about this time and I usually do my best to help them through it the best I can by sending them distance reiki and giving them an idea of what to expect. I know it can be scary facing that time alone. Most of the time the healing crisis happens in levels according to the level of reiki that you are being attuned to.
During Usui Reiki Level 1 it is the physical healing, so you get the purification of the body and the physically sicknesses. At level 2 Usui Reiki attunement comes the emotional healing or cleansing. You become an emotional mess dealing with all those emotional wounds that one tends to try to bury or to not deal with. Level 3 and 4 (depending on how your Master Teacher teaches this) is spiritual healing. I find that at this stage my reiki students have enough skills in self-healing that I rarely am called for help. They also tell me that it is the least dramatic of the healing crisis. When I got to this level in my formal Usui training, I was the one that my teacher demonstrated the attunement processes on and then I allowed the other student to practice on me, so I received 6 attunements in one 6-hour class, so my healing crisis was more than what is normal. I also don’t recommend doing that or anyone to volunteer to do that.
Please feel free to share your own experiences or ask me questions.