There of course is an offseason. It comes every year in the winter months during which no Major League games are played. But for players, those months are never truly off. They represent just another opportunity to improve one's skills or get stronger in preparation for the next season. Hence, in at least a psychological sense, there is #NoOffseason.
Phillies first baseman Carlos Santana is certainly using baseball's winter break to get even stronger for 2018. On Friday, he performed an impressive feat of strength by pushing a car across a parking lot and -- apparently -- up a slight hill.
Slamtana has hit 20 or more home runs in four of the last five seasons. If he's now strong enough to push a car up a hill, who knows how many he'll hit next year.