New Delhi, Dec. 16 -- That surge of energy before a workout can feel empowering - helping you lift heavier, move faster and train harder. But doctors warn that regular or excessive use of pre-workout supplements may come with hidden health costs, particularly for the heart, mind and sleep cycle.

Dr Kunal Sood, an anaesthesiologist and interventional pain medicine specialist, recently broke down the potential risks of frequent pre-workout use in an Instagram video shared on 13 December. He explained how commonly used ingredients in these supplements can affect cardiovascular health, trigger anxiety, disrupt sleep and, in extreme cases, strain the kidneys.

According to Dr Sood, most pre-workout formulas rely on synthetic stimulants to del...