Explanation: Chemicals
There are four primary chemicals in the brain that effect happiness: dopamine, oxytocin, serotonin, and endorphins. By designing gamified experiences that activate these chemicals, you can increase your users' happiness and loyalty.
Answer:
not very good for you and too young
3. is the answer you need
Answer:
Prone Position
Explanation:
In patients who have undergone transtibial and transfemoral amputations, prolonged sitting with the hip and knee flexed should be avoided. Patients who have undergone transfemoral amputations should be instructed to lie in the prone position multiple times during the day to stretch the hip musculature.