HRV Heart Ratę Variability

I would be very grateful for information on heart rate variablity -HRV, what it should be and how to improve it

Ashwagandha - recommended brand or formulation?

Getting supplements outside the US

Hey i live in Israel and want to get athletic greens which you highly recommend but im unable to get them here . Is there any other plans that are global that i could try? Or should i try and get them from several suplliers?

GBEEC

Can you speak about the effects of using Gamma-butyrobetaine ethyl ester chloride (GBEEC) during exercise, proper dosing (if any), it’s potential fat burning effects as it’s market for? I could not locate (at pubmed.gov) any relevant information pertaining to a laymen’s description as it relates to its use in exercise. Many thanks for any opinion you can offer.

Cissus quadrangularis for joint support?

Hi, someone else's January 13th question on cissus reminded me that I've seen it mentioned for joint health and use in athletes. What do you think? Thanks!