Can One Be Lean And Hypo?

[The Dude]

5'11
134 lbs
Entire body feels like pure muscle. Hard pressed to find any extra fat anywhere.
Can't gain weight no matter what I eat.
Age 28 and have been mid 130's in weight since high school.
Wife repeatedly says I feel like a space heater.

..... Yet I still get cold hands and feet.

Whats the issue? not enough calorie intake?

 

[Fractality]

Yes, sometimes hypothyroidism manifests as inefficient energy (calorie) use. Cold extremities but warm body would indicate stress hormones. What is your pulse rate first thing in the morning and after eating breakfast?

 

[The Dude]

Thanks for the response. I will measure tomorrow morning and report back to you.

 

[The Dude]

waking: 68
after breakfast : 66

Breakfast: 1/4 lb ground beef, well sugared coffee, watermelon

 

[GreekDemiGod]

I'm also lean.

• morning temps 36.2 - 36.4 Celsius
• morning pulse 65 - 70 bpm
• cold feet often

What would be the cause of hypo in my case? I need to get to the root cause of this asap.
What's frustrating is that my waking temps were a bit higher when I started peating last summer.

 

[lampofred]

I'm also lean.

• morning temps 36.2 - 36.4 Celsius
• morning pulse 65 - 70 bpm
• cold feet often

What would be the cause of hypo in my case? I need to get to the root cause of this asap.
What's frustrating is that my waking temps were a bit higher when I started peating last summer.

I think running on fat instead of sugar can cause this.

 

[GreekDemiGod]

Thinking the reason I'm able to stay so lean and not gain an ounce of fat is due to powerful effects of adrenaline.
Hypo people are usually overweight, that's not my case.
My core (abdomen and lower back) is so, so warm. My feet are freezing, on the other hand.