cost of inactivity in the United States

PHIT America uses Worldometers as our resource for
 "The Cost of Inactivity In the USA is Rising". 
Here is how Worldometers calculates this cost:

Financial Cost of Physical Inactivity 

Reduction in the occurrence
of cardiovascular diseases 
(in particular, but not limited to,
coronary artery disease), stroke, and type 2 diabetes achieved in those who undertake physical activity 
(defines as a minimum of 2.5 hours
of brisk walking per week,
equivalent to 30 minutes per day for 5 days)
is estimated at approximately 30%
​
Costs of cardiovascular diseases and stroke: 
$320.1 billion per year
​
Costs of type 2 diabetes:
over $300 billion per year  ​

Medical expenditure:
over $3 trillion 

More than 75% of medical care costs
is due to
chronic conditions.  ​

Physical inactivity contributes to
8% of deaths
from chronic conditions.

Worldometers' Sources and Methods