Shakti has predictable side-effects when used in a series of weekly
sessions.
Preliminary reports from sessions done every three days have not
mentioned it.
These are temporary, and they come from a process called "metabolic
snapback". In fact, it's becoming less common since the Shakti signals were upgraded late in 2001.
One possible series of sessions consists of six sessions, once per
week, for six weeks.
Each session is 30 minutes.
During a session, one or more of your brain parts are stimulated
to increase their activity.
The effects of a single session typically last about four (4) days.
Four days into the second week of weekly sessions, the brain tries
to re-establish it's old, patterns of responses in these brain parts. It does this by activating the same structures
on the opposite side, and connected areas on teh same side.
While that's happening, if it happens at all, the effects may taper
off completely. This has been called "being in snapback". It's a rebound effect.
For some people, it's intense, and for others, it's hardly noticeable.
Most people don't feel it at all.
I use rules of thumb at present. With more research, we will be
able to predict these things with more certainty.
The animation below describes a typical process. Your own process
may differ.