First thing I would say is, they should watch their food. More healthy food, more organic food.
Second is, they should not stop singing. In this country, if you see in the villages, when women go for working in the fields, they keep humming and singing. So singing gives a lot of energy to do their work with enthusiasm. Men are more shy to sing than women. So women should not leave their habit of humming and singing. Singing can give them a lot of energy.
Third thing is, do some yoga and pranayama.