The first set of muscles is the front delt, which can be targeted by performing any exercises that involve pushing like pike push-ups and handstand push-ups.
Step 1: Take a chair and come to push-up pose by placing your feet on the chair and hands on the ground.
Step 2: Your hands should be shoulder-width apart and completely stretched. Push your hips higher.
Step 3: Now lower yourself down and then perform push-ups. Repeat the same for 10-15 times in 4 sets.
If you are a beginner or find it difficult to perform this exercise, then you can remove the chair and perform pike push-ups on the ground as well. Just come to the push-ups position, take your hips higher and then start doing push-ups.