Well. You might have already thought of this but you can eat healthy foods like greens. And you can also exercise like stretching or going out for a 30 minutes run every day. These two thing do help your emun system witch fights off diseases. Also helpes you not get them as easaly
Rita carrying a pepper spray in her handbag is trying to fullfill SAFETY NEEDS according to maslow's hierarchy of needs. Safety needs are protection from elements, security, order, law and stability. This law is an actual fact because people are rational and in need of protection.