I think passion like anger is an energy and when it embarrasses you it can be difficult to focus, which is why your body is in harmony and less prone to sickness, focus like you would do if a lion was chasing you at the expense
of shutting down your immune system and you will get sick, As we currently live in fear, hence we get sick a lot. Ask your friends if they have ever been in love, and then ask them if they got sick during this time, the answer may surprise you, thank you for your comment it was great to hear from you, regards Gez....