The main weaknesses of HealthMark are as follows:

-	HealthMark has no real physical presence.
	
-	The aggressive focus on the corporate site segment is new for HealthMark.
	
-	Although HealthMark trainers are loyal, they could break off and compete with HealthMark.
	
-	The personal training business has inherent fluctuating demand.

It is complex and difficult to manage and coordinate supply (the personal trainers and their time) and demand (clients and desire for services).