Answer:
<em><u>Not sharing water bottles </u></em>
Explanation:
Assuming what you mean by cold sores is herpes, it will defiantly be not sharing water bottles.
Avoid sexual activities and/or sexual priorities. Also, have a good amount of self-control
It would depend on how bad the tear is. You have tendons in your knee, most notably acl and pcl and if you tear those bad enough, you will not be able to walk