Re: Travelling to client sites
Cure for jet lag: Melatonin.
Part of my job title was "global network troubleshooter" from the early '80s thru' the late '90s ... at any given hour I could expect to be flying off to anywhere on the planet. 0.25mg melatonin 35 minutes before "local bedtime" on the first night out, and I was fine for the duration of the trip ... until the next timezone. Lather, rinse, repeat ... I experienced no ill effects, could wake up immediately if required, and apparently it's not addictive (all unlike alcohol, sleeping pills, etc.).
Yes, I know, "studies indicate", yadda yadda yadda. I am not a doctor, this is not a prescription, might be illegal in your jurisdiction, etc.