Under florida law a driver who refuses to submit to a test for alcohol or drugs will lose his her licence for

Refusal to undergo any of the test in Florida is permissible as indication in criminal measures. Second or following refusal is an offense of the first degree. Driver license suspension periods will be: for the first refusal, the driver’s license will be suspended in 1 year and for second or subsequent refusals, the driver’s license will be suspended for 18 months. Commercial driver license disqualification periods will be: for the first refusal in a commercial motor vehicle the disqualification will be 1 year and for second or subsequent refusals in a commercial motor vehicle will be disqualified permanently. No hardship reinstatement permitted. 

Pe.dometer would be the most useful to you for monitoring heart rate.