According to the article, what are some instances in which one should refrain from stretching?

The article you mentioned is not visible to me since I don't have access to external content. However, I can provide general guidelines about when one should refrain from stretching based on common knowledge in the field of exercise and sports medicine.

Here are some instances in which one should generally refrain from stretching:

1. Immediately After Injury: If you have sustained an acute injury, especially involving muscles, tendons, or ligaments, stretching the affected area could potentially worsen the injury. It's important to allow an injury to begin healing before attempting to stretch.

2. When Muscles are Cold: Stretching cold muscles increase the risk of strains or injuries. It is usually recommended to do a light warm-up to increase the blood flow to the muscles before stretching.

3. If You Have a Chronic Condition or Muscle Damage: Certain chronic conditions or severe muscle damage may limit your ability to stretch or could require specialized stretching routines to prevent harm.

4. Without Proper Technique: Stretching with improper form or technique can be counterproductive and even harmful. It’s important to understand the correct way to stretch to avoid straining muscles or joints.

5. During a Flare-Up of a Joint Condition: If you suffer from a joint condition like arthritis and you're experiencing a flare-up, stretching might exacerbate your pain and discomfort.

6. If You Feel Pain: Stretching should not cause pain. If you experience pain during a stretch, you should stop immediately. Discomfort is normal, but pain can indicate that you are pushing your body too far or that there is an underlying injury.