Discretionary calories are excess calories to enjoy once your required nutrient needs are met. They can be used toward higher-fat forms of foods like milk, cheese and meat,
Hope that helped <3
All except the third option.
The 4 are as follows: blood-air, phlegm - water, yellow bile - fire and black bile is earth. so blue vile would not belong
Smaller veins called venules then go back into the larger veins that pushes the blood back to the heart
