I love cooking, which is an activity pretty much going back over a million years in humans and their ancestors!
Cooking is an important daily activity. Keep yourself healthy.
Totally true! Our diet has a huge impact on our health like Vitamin C can maybe shorten the length of a cold! 
Exactly. Making sure you are eating for your TDEE or your goals is important.
What's TDEE?
Total Daily Energy Expenditure. It is the amount of calories your body uses per day based on just the amount it takes to 'power' your bodily functions.
So that has a lot to do with your basal metabolic rate, or energy used at rest. 
Yeah, but that calculates purely on if you are at rest. TDEE can be used to factor in daily activities.