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.
The National SAFE KIDS Campaign recommends that children not be left alone before the age of 12. If you have a child younger than 12 who you feel is mature enough to be home alone, you might prefer to follow the guidance below. Children 8 years old and younger should never be left home alone.