Since playing badminton requires quick movement, stretching muscle is very important to prevent your body from injury. Especially, the aged people's muscle and tendon become hard to follow the quick movement. Stretching is very effective before playing. The knack is slowly doing, over 20 seconds, with abdominal breathing.
Calf Exercise
Leg muscle stretch
Side stretch, waist
Upper arm stretch
Shoulder stretch
Wrist stretch
Neck stretch
Try stretching in the morning, and always stretch before working out.
