First up defining stress. Stress is actually what we go through everyday, it's like the definition of challenge. For us people stress is what we don't want but is the essential thing of forming us. For plants experiencing stress just like malnutrition they are slow to bloom and make their fruits.
Hyperbaric Oxygen Therapy is a medical treatment for patients where standard medicine is inadequate. Patients suffering from strokes, cerebral palsy and other diseases where the quality of life is diminished would greatly benefit in this type of treatment. HBOT bombards the body with oxygen, allowing the body to absorb it and replenishes the oxygen and eventually naturally heal it.
It would be Alcohol, any drug use,eating unhealthy, smoking,lack of working out, lol basically having intercourse at a young age without any protection, also unintentional injuries or violence.
P.s to prevent most of these all you need to know is right and wrong and if you know these thing can have consequences then don't do them also keep your legs closed , for one of them its important to work out every now and then