Inertia is the opposing of gravity so...
the commercials are aimed at the age group of 2 to 14 years olds
A first degree burn would be the immediate reaction
People can survive if without food for 8-21 days yet it would be better to just eat minimum amount of calories than starve one's self. It has been suggested that women should eat 1200 calories daily while men can eat 1500 calories as the minimum in a day. To maintain weight, women can have 1600-2400 calories daily while men 2000 to 3000 calories a day.