The exercise order guidelines in resistance training favor doing multi-joint, larger-demand movements first, then single-joint, isolation movements. Chest press is a multi-joint upper-body exercise that places high neuromuscular demand, so performing it when you’re fresh helps you maintain good form and force production. Calf raises are a single-joint lower-body movement, and placing them after the chest press fits the typical order pattern. This arrangement allows you to complete the more demanding upper-body work with solid technique and energy, then train the calves without compromising the quality of the earlier lift. Choosing to do calf raises after chest press also aligns with the goal of improving uphill running by ensuring the primary, compound movements aren’t sacrificed by early fatigue, while still incorporating calf work later in the session. Putting calf raises before the chest press would fatigue the calves first and potentially reduce performance on the chest press. Inserting them between other exercises or after different movements would also disrupt the logical order of multi-joint before single-joint and potentially affect overall workout quality.