I try to do the 55 at least 3 times a week... & I can usually do this in the van while my husband drives (sometimes its more challenging) or while parked at Pfj.
The 55 is start with
10 push ups then do 1 swat, rest 30 sec
9 push ups - 2 swats - rest
8 push ups - 3 swats - rest
keep...