Summary
Activate X-Factor. Once you do, your Point Character will begin to regain Red Health back into regular health and your Assist Characters' rate of Red Health regeneration will increase.
Healing and Bypassing Chip
As mentioned in the Red Health section, X-Factor allows your Point Character to regenerate Red Health. As long as you do not block any attacks or get hit again, your Red Health will continue to rise. If you ever block an attack, the regeneration will stop and then begin again once you are no longer in Block Stun. Also, you Assist Characters will regain their health at a much more rapid pace than normal.
The other added extra benefit of X-Factor Healing is that you will also no longer take any Chip Damage. So if your opponent is trying to chip you to death, you can activate X-Factor and avoid all Chip Damage.
Strategy Corner
???