Overview of Glutamine and MSG

I have come across these substances on many occasions throughout your podcast episodes. It would be nice to get a bit of a primer and deep dive on these. How are they related? What about bioavailability. What is their effect on/in the brain, blood glucose levels, headaches, migraines, inflammation... Are there any studies on these substances in relation to the aforementioned effects? My n=1 experience on MSG is that often when I get a migraine attack with synesthetes, on the evening of the day before I consumed some amount of MSG.

What is your current exercise routine?

How do you incorporate blood flow restriction (BFR) into your workouts?

What is your squatting technique and fundamentals?

What are some important cues to look for while lifting weights?