Everything that pushes: chest, shoulders and triceps. It opens with a heavy press for the chest, follows with one overhead, and ends with direct work for the side of the shoulder and the triceps.
Dumbbells make each side carry its own weight, so a stronger arm or leg cannot cover for the other, and they travel through a longer range than a bar allows.
Sets per muscle. A muscle that only assists in an exercise counts half.
How to run it
Before the first exercise, do two lighter sets of it: one at about half your working weight and one at three quarters. Rest for the time shown next to each exercise; the heavy lifts at the top need more than the smaller ones at the end.
Aim to finish each set with one or two reps left in you. If every set reaches its target easily, the session is too light. Dumbbells go up in big steps. When the next pair is too heavy, add a rep to every set first, and move up once you are two or three reps over the target.
It is the first day of a push, pull, legs rotation. Run the three days once a week, or twice through with a rest day in the middle if you train six days.
If something is taken
Keep the same number of sets. In the app you can swap an exercise for one session without changing the program.
In myreplog
Logging is free for good. The first 14 days also include Pro, where a coach reviews each session and suggests the weights for the next one. No card needed.
Questions
About 45 minutes. That is 19 working sets with the rests listed next to each exercise, plus five minutes to warm up.
Mostly the triceps, shoulders and chest. The traps assist. The map on this page shades each muscle by the number of sets that reach it.
A pair of dumbbells and a bench.
The chest, the shoulders and the triceps: every muscle that straightens the arm or pushes a weight away from the body. The back and biceps are left for pull day.
Start with the one you want to bring up. This session starts with a chest press because it is the heaviest lift of the day, and puts the overhead press second while the shoulders are still fresh.
More dumbbell workouts