How to Halt and Minimize Panic Attacks (PsychCentral). Among the tips:
Stimulate your mind. Engage in activities that stimulate your brain and keep you busy, such as getting outside, exercising or taking a shower. In fact, a recent study analyzing 40 randomized clinical trials of 3,000 people with various medical conditions found that people who exercised regularly experienced a 20 percent reduction in their anxiety symptoms compared to non-exercisers.