Get Cold and Go Hungry.

Matt,

Follow your hunch about the benefits of regular doses of physical stress. You'll re-discover the principle of hormesis - the theory that physical, emotional, or existential stress in survivable doses has the effect of increasing capacity and enhancing recovery.  

You have access to the finest in creature comforts. You work indoors and live in a heated and cooled home. You have all the clothes you need. This reduces your exposure to environmental stress. Balance this out with repeated doses to physical stress to maintain your primal survival ability.

Get Cold 

You've always enjoyed the cold weather. Now take it further and go against your natural tendency to bundle up against the chill and immerse yourself in it and get cold.  Feel the cold seep into your bones. Embrace it. You'll quickly (less than 2 minutes into the chill) notice a change. The pain will lessen and the freedom of being alive in the cold will transform you.  Reconnect with the days of your youth when you worked and played outside regardless of the weather.

Wim Hof has already done the scientific work and has explained the benefits.  There's no reason to repeat it all here. Just know that your hunch to embrace the cold will transform your life.

Get Hungry

Going hungry allows your body to consume its excess stored energy.  Regular short term fasts (16-20 hours - 3 days) paired with a low carbohydrate diet allows your body to convert from burning sugar to burning fat. You'll drop several pounds of 'baby fat' and achieve a new level of mental clarity and physical health.

When you do eat, don't eat processed sugar, processed foods or industrial wheat or oils.  Stick to the ethically produced animal products and seasonal vegetables.

Pushing for ketosis or going full carnivore is an option but isn't necessary to achieve the benefit of a low carbohydrate diet.

Enjoy not eating and be grateful that your hunger is by choice.  Never forget the blessings in your life.

Others know hunger and cold without choice.