Aerobic exercise schedule:
20-25 minutes, consuming blood sugar and glycogen in blood to supply energy.
25-45 minutes, consuming fat to decompose subcutaneous fat to supply energy.
More than 50 minutes is muscle consumption, mainly through the decomposition of protein in muscle to supply the consumed energy.
By following the above principles, you can control the duration of aerobic exercise and achieve your goals.
In addition, adding some strength training movements can actually improve the metabolic level and promote the decomposition of fat.
Female friends don't have to worry about growing into big muscles. According to the physiological structure and hormonal characteristics of women, it is quite difficult to grow into the muscles of male athletes.
I wish you success in losing weight!