[aarongray]

Tell your friend to look into dysautonomia. There are some cutting edge treatments for chronic fatigue syndrome, they just haven't become mainstream knowledge yet.

The two most effective approaches are using neuroplasticity exercises to retrain the limbic system (cheap, but time consuming - an hour a day for 6 months): https://ansrewire.com/ https://retrainingthebrain.com/

Or doing microcurrent neurofeedback (costs ~$150 a session, do one session a week for a couple months): https://microcurrentneurofeedback.com/

Essentially you have got to get the brain producing the proper amount and type of brain waves again, and then once you have that, slowly work back into exercising while trying to avoid triggers and push / crash cycles.

[texasbigdata]

God bless you for this. Seriously.