There are many exercises you could do for small muscle groups such as smiling. You could also do butt flexes.
The preacher curl exercise primarily targets the biceps muscle group.
The tricep pushdown exercise primarily targets the triceps muscle group.
The exercise "skull crushers" primarily works the triceps muscle group in the arms.
The leg extension exercise primarily targets the quadriceps muscle group in the front of the thigh.
The lateral pulldown exercise primarily works the latissimus dorsi muscle group, which is located in the back.
The exercise "cross body hammer curls" primarily targets the biceps muscle group.
A full-body workout routine that targets each muscle group with one exercise per group is called a compound exercise routine. This type of routine typically includes exercises like squats for the legs, bench press for the chest, rows for the back, shoulder press for the shoulders, and deadlifts for the lower back and hamstrings. These exercises work multiple muscle groups at once, providing a comprehensive workout for the entire body.
The same way as for any other age group . By exercise and diet.
Good to exercise daily but if you do resistence training give each muscle group 48 hours before using it again.
Primarily the lower chest muscles
A muscle group is a collection of muscles that work together to perform a specific movement, such as the biceps or quadriceps. To effectively target and strengthen a muscle group through exercise, you can perform specific exercises that isolate and engage those muscles, such as bicep curls for the biceps or squats for the quadriceps. Consistent and progressive resistance training, proper form, and adequate rest are key factors in strengthening a muscle group effectively.
The Front Curl works with the biceps.