Which parental responsibilities would be the most challenging? why?

For weman it is the phisycal birthing of the child

for the men probly growing up

starvation is bad because your body needs nutrition and to deprive it of nutrition can cause problems with both health and fitness.

explanation:

it can make weight loss slow down over time, but it won't cause someone to gain weight depsite restricting calories. starvation causes weakness in the senses like thirst.