We’re slowly shedding our multi-layers and ready to pretty much live in tank tops of every shape and size this season. The second it hits seventy degrees we do away with the heavy sweaters and parkas faster than you can say Daylight Savings. Time to prep for all those bare shoulders, legs – and, of course, backs!

Scarlett Johannsen and Blake Lively don’t get those strong bodies by accident. Both aspirational celeb bodies work with trainer Don Saladino for his famously quick and highly effective workouts. Saladino uses split training – a workout style that focuses on one area of the body per training sesh – to get clients on the fast track toward hard body status. Not only does split training give muscles ample time to recover, it means a more focused workout.

Join us in getting ready for this sleeveless season with Don’s full week of workouts. Tackle chest + biceps on Day One, legs on Day Two, shoulders + triceps on Day Three, then try your hand at this killer back routine on Day Four – put all those cute cut-out fitnesswear picks to work!