I came across this, it's an interesting read. It's 50 Signs You're Healthy. They asked medical professionals, and these are the 50 signs according to them:
http://www.msn.com/en-ca/health/wellness/50-signs-you%e2%80%99re-healthy-from-every-type-of-doctor/ss-BBArKCS?li=AAggNb9&ocid=mailsignout#image=1