When you fail to clash any amounts of POW, the POW is then converted into an injury.
Refer to the table below for the POW values in correspondence to the injury severity.
A person can only take so much damage before passing out. You can take:
x1 Tier 5 Injury
x2 Tier 4 Injury
x4 Tier 3 Injury
x8 Tier 2 Injury
x16 Tier 1 Injury
The injuries go up in multiples of two. You can treat it as a metre that goes up to a total of 16.
( i.e. you can take 4 Tier 2 Injuries and 8 Tier 1 injuries, passing out due to an aggregate of 16. )