Why is it more difficult to eliminate the fat in the abdomen, legs and buttocks?

Catecholamines: Catecholamines in human body combine with receptors in fat cells through blood, which can promote fat decomposition and release energy.

Two adrenergic receptors in adipocytes: A receptor and β receptor.

The body is called a "good receptor". Can promote the burning of fat. When catecholamine is combined with it, fat cells will be mobilized to provide energy for the human body. Alpha receptors are called "bad receptors". Its function is just the opposite of β receptor. Catecholamines can not mobilize or decompose fat cells after binding with them.

The contents of α receptor and β receptor in different parts of human body are different.

Studies have shown that the X receptor in thigh and hip fat is 9 times that of β receptor; However, male abdominal fat contains a higher proportion of α receptor.

blood circulation

The greater the blood circulation, the faster the fat is eliminated, and the warmer these parts are. Now you can touch your hips or stomach. Their body temperature is lower than other parts (arms, chest, etc.). ).

Poor blood circulation will mainly cause two kinds of effects:

① Some blood-derived sex hormones (such as catecholamine, which can promote lipid decomposition) are difficult to enter fat cells;

② Fat metabolism in these parts is difficult.

Aerobic exercise on an empty stomach can help you get rid of stubborn fat.

The results show that aerobic exercise on an empty stomach can obviously improve abdominal blood flow, and catecholamine can more easily combine with β receptor in abdominal fat and promote the combustion of abdominal fat.

How to correctly carry out aerobic exercise on an empty stomach

1. The best time for fasting aerobic is early morning. At this time, it is in a state of complete fasting.

2. Don't take any carbohydrates before aerobic exercise on an empty stomach.

3. Eating 10-20g whey protein or 5- 10g branched-chain amino acids before aerobic exercise shows that branched-chain amino acids can enhance the fat burning ability of aerobic exercise.

4. Add 200-300ml water half an hour before aerobic exercise on an empty stomach.

5. The best duration of aerobic fasting is 20-30 minutes; Low training intensity, 60-70% of the maximum heart rate; 3-5 times a week.

6. Using caffeine before fasting aerobic can promote the secretion of catecholamine and accelerate fat burning.