Question

what can you suggest it to your classmates to keep himself or herself clean and healthy

Answer 1

When children reach puberty, a new type of sweat gland develops in their armpits and genital areas. Skin bacteria feed on the sweat this type of gland produces, and this can lead to body odour (BO).

If your child washes her body and changes her clothes regularly, especially after  physical activity, it’ll help to reduce the build-up of bacteria and avoid BO. Changing underwear and  other clothes worn next to the skin is especially important. These  clothes collect dead skin cells, sweat and body fluids, which bacteria love to eat. That’s why they get smelly.

The onset of puberty is also  a good time for your child to start using antiperspirant deodorant. You can encourage your child to do this by letting him choose his own. Note that there are many products that are deodorants but not antiperspirants. These simply cover up odour. Antiperspirants stop BO by controlling the amount of sweating.

Hope it helps..

Answer 2

I will suggest him or her to have healthy or balanced diet .To avoid the store foods , to do exercise daily, to maintain timetable ,and to follow it. To bath daily ,and to wear clean clothes.
and otherwise it does not matter for me how my friend is looking but I will only suggest as a concern for him or her .
hope I am right