I think that some people just tend to be cold and some tend to be hotter.
I have had lower body temp and low blood pressure for my entire life.
When thin and very active/muscular and eating gobs of carbs... low body temp and low blood pressure.
When heavy/gaining weight and eating carby foods... low body temp and low blood pressure.
When primal and eating lots of fruit and carbs... low body temp and low blood pressure.
When low carb and losing weight... same exact low body temp and low blood pressure.
It's just me. People are different.
After looking at me like I have two heads (I guess they don't expect blood pressure like that out of an overweight 40 yr old woman with multiple chronic health issues due to autoimmune disease), asking me if I feel OK, and me explaining that it's always been that low... I generally get congratulated on having fabulous blood pressure and heart rate.
My husband on the other hand... dieting and losing weight, pretty low carb as well... hot as can be.
All the time.
I'll be in sweats, he'll be in his boxers.
But he has always been that way too.
The kind of guy who used to sleep with his window open when he lived in Plattsburg, NY in the middle of WINTER!
Oh, and he has higher blood pressure too... not "high" but he hits near the top of the normal range up around 120-130 where as I'm always in the rock bottom of "normal" in the range of 100-110 and sometimes below 100 in the "low normal" range were children or athletes would be...
I am neither a child nor an athlete.
This opposites type thing concerning body temp and blood pressure has applied to us throughout varied diets and levels of activity over 15 years.
None of that made any difference.