As much as possible, avoid such situations. Keep calm, cheerful, and relaxed. Plan ahead and avoid scheduling pressures. Trust in God and believe He will care for you. Vigorous outdoor exercise will strengthen the entire body, and also relax it.
Exercise tends to neutralize the attitude and effects of stress.
Avoid fatty and fried foods, all junk foods. Caffeine restricts blood flow. Sugar increases blood viscosity as well as triglycerides. Avoid food seasonings. Do not take any tobacco product or use alcohol.