His post attracted several interesting responses. One commenter, who described himself as a weekend runner with an interest in yoga and calisthenics, asked whether ApoB, Lp(a), fasting insulin, HbA1c, hs-CRP and vitamin D were useful tests for a cardiac health assessment. Dr Kumar replied that these tests were useful. However, the need for each test depends on individual health risks and should be discussed with a doctor.

Another user, concerned about a resting heart rate of 95-100 bpm, asked how long it took Dr Kumar to notice a difference after starting running.

The doctor replied that he began running around six years ago. Changes in heart rate became noticeable within six months and continued improving over time.

A different commenter shared that he walked 5 km daily and credited the doctor’s posts for inspiring him.

There was also a question about whether the watch’s heart-rate reading was accurate. That is worth considering. Wearable devices can provide useful estimates, but their readings are not medical measurements. One day’s average heart rate cannot establish cardiovascular fitness.