What do you mean by your herat and your lungs
Saliva and other fluids blend with food to form a BOLUS that enters the esophagus to the stomach
It can stop you from eating to much, or to little, for example if you see you've eaten to many calories in a day it can stop you from eating more. It can also convince you too eat a little more if you're under the recommended calorie intake a day. If you're under working yourself it can convince you to work out a little more, but also tell you to take a break if you're overworking yourself.
hope this helps :)
Well generally it will be a positive impact (Of course this generally depends on what the "Physical activity" is, it is generally good, reason being while exercising causes the brain to release endorphin's, as well as helping relax muscles and relieve physical tension, which can greatly help with stress.
