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Zone II Training Wasted?

If you test your lactate after a 45 minute Zone II session and see something like 2.4 mmol, does that mean you just wasted 45 minutes given your goal was to train Zone II?

Exercising with and without O2

There are systems available such as LIVE O2 that provide reservoirs for holding 100% and low oxygen such that they can be used during exercise to duplicate altitude training. EWOT is one term for this type of training. The scientific studies on these seems low. Curious if you have looked at these devices/systems and what your opinion is of training with 100% O2 and contrasting it with low (14%) O2 during cardio exercise?

Heart rate zones with out lactate meter

How do I determine my zone 2 without a lactate meter?

Protocol for day after poor nights sleep

Hey there, Wondering if you could share if you have a protocol (or there is an ideal protocol) for after bad night's sleep (eg short duration, poor quality, etc)? Particularly for fellow physicians who don't work at home (ie can't nap). Modafinil? Caffeine? Suffer through it.

Deep dive on on stimulant use in children/adults for ADHD or nootropic effects

I'm interested in a deep dive on the use of stimulants as a treatment for ADHD and as a general nootropic. Curious what Peter's opinion is on safety and efficacy of their use for both children and adults and what studies support those views. Perhaps he could bring an expert on to speak about ADHD and treatments. I would be interested to hear his point of view. Thank you.