It’s pretty normal for most people to experience occasional stress. But when stress is a constant, long-term experience, the negative health impacts really start to build up.
From the National Center for Complementary and Integrative Health:
In contrast to the stress response, the relaxation response slows the heart rate, lowers blood pressure, and decreases oxygen consumption and levels of stress hormones. In theory, voluntarily creating the relaxation response through regular use of relaxation techniques could counteract the negative effects of stress.