Editing Push-up (section)

=== Chest muscles ===
The push-up requires the work of many muscle groups, with one of the primary muscle groups being the chest muscles, the [[Pectoralis major muscle|pectoralis major]] and the [[Pectoralis minor muscle|minor]].<ref>{{cite web|url=http://www.md-health.com/What-Muscles-Do-Push-Ups-Work.html|title=What Muscles Do Push-Ups Work?|work=MDhealth.com|date=11 September 2018}}</ref> These are the two large chest muscles and the main pushing muscle group of the upper body. When pushing and lowering the body during a push-up, the pectoralis major is doing most of the work. As a result, these muscles become very strong and can become defined as lean muscle after doing push-ups regularly{{Citation needed|date=January 2024}}.