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Hi Mr Huberman

My name is Ryan King and enjoy your podcasts thanks . I am a member and for the last 2 months I have been debited 200 Dollars a month where i should only be debited 10$ a month. The 2 amounts debited was in rand equivalent and amounts are 3358,71 Rand x 2 months and if you convert that at the exchnage rate Rand to Dollar it works out to 395 dollars.!!! I have emailed and now sending a personl request to look at this ASAP for me. Thanks Ryan King from South Africa

Can caffeine work as a reinforcer for things other than food?

Hi Andrew, in the recent episode about caffeine, you mentioned caffeine can work as a reinforcer for food (You tend to like the food more compared to when you eat the food without caffeine). I'm wondering if caffeine can have the same effect for other things. For example, if people take caffeine, do people tend to like the place more or tend to like the people they're with more?

Sleep walking

Hi Andrew, I would like to know the science behind why people sleep walk? Is there anything that can be done to prevent sleep walking?

Long periods of cold water immersion

Are there additional benefits from longer periods of cold water immersion? 20, 30, or 60 minutes?

Hypothyroidism treatments

Many docs only test TSH and supplement with T4 (Synthroid). I have had hypothyroidism for years. Currently, my TSH is low/below normal on Synthroid but my T3 levels are also low normal and I continue to have symptoms of hypothyroidism. When is supplementation with T3 recommended? How should appropriate dose be determined? When should complete thyroid panels (antibodies, etc) be considered?