Falsee thats totally unhealthy if you isolate from people just for a "healthy" relationship
Excersise and eating healthy are the two main things
The diagnostic test that records the electrical activity of the heart is called ECG or Electrocardiogram. An ECG is a painless and simple test, which uses electrodes arranged and attached to your skin, and records the activity of the heart. ECG detects any abnormal rhythm and pattern of the heart beat and this helps doctors in diagnosing arrhythmias.
Answer:
Be there for them. Not necessarily tell them "don't be suicidal" But more of telling them "if you ever need someone to talk, I'm here", Or even asking them about their life could get them to open up to you about why they are feeling suicidal, you could be the person they need to open up to.
Hope this helps!