The body for things like an entangle persist until the captured target breaks free or, in Gaea's case, its duration expires.  To break free something has to deal at least 5 normal body to overcome its defenses and 6 to break the entangle entirely.  That works out to an average of 25-30 strength required to break free.<br/><br/>Gaea's average entangle should have 4 defenses and 4 body, though sometimes they are stronger or weaker like this pair of entangled, and require an average of 40 str to break free in a single action, with at least 25 str to do any damage to it.<br/><br/>The body result for a flash translates into segments, so a 2 result for a flash is a mere 2 segments before it wears off.