Pets can reduce stress in humans for several reasons. One key factor is the companionship and unconditional love that pets provide. Interacting with pets can release oxytocin, a hormone that helps reduce stress and anxiety. Additionally, caring for a pet can provide a sense of purpose and routine, which can help alleviate stress and improve overall well-being. The physical touch involved in petting or cuddling a pet can also have a calming effect on humans, lowering heart rate and promoting relaxation. Overall, the bond between humans and their pets can have a positive impact on mental health and help in managing stress.