The Proposal
Whenever a character moves or takes an action to do anything strenuous (including dash), the amount of time that can continue to hold their breath is reduced by 1 more round. This is in addition to the normal loss of breath from passage of time.
Optionally, if a character takes damage, they must make a Constitution save equal to 10 plus the damage taken or lose another round of breath. If they fail the save by 5 or more, they lose two rounds instead.Read More »