The most effective way to exercise for fat loss is to create a program that combines high-intensity and low-intensity exercise. Thatâs because each type of exercise promotes fat loss in different and complementary ways.
Since you asked, I do think it is odd that your grandchildren sleep with you if you have other accommodation available for them. Also, a nine-year-old should be able to bathe or shower alone. I would worry more about lack of independence at that age than anything improper, but at age 9 I would expect a boy to be more modest than you are describing.
Children between ages 7 and 10 years aren't generally ready to self-supervise for an extended period, but in a routine and predictable environment, such as just after school, they can manage, Tanner said. Children 12 and 13 years old should be judged on a case-by-case basis but should not be left alone overnight.