SIS

The modern world is awash in acronyms.

Scratch any card-carrying bureaucrat and you'll find an acronym. Scratch a psychologist or psychiarist and you'll get a whole pasel of them. In fact, if you go to acronyms.com you'll discover there are 862,000-plus acronyms, initialisms, alphabetisms and other abbreviations. You'll also find 249 for SIS alone, from Snickering in Silence to Springtime in Sweden.

In our case SIS stands for short, intense and sweet, as in the results you'll get from following short, intense training, the kind that pretty much sums up our philosophy: Don't waste time; put in the work and get your butt out of the gym.
rle