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Young Asian men laughing and talking during interval and breaks at the gym (hydration and protein)
The PR interval of ECG refers to the time from the starting point of P wave to the starting point of QRS wave, which is the time when the electrical impulse conducts in the conduction system.
Tools for crypto currency investments analysis. Graph of digital money price movements represented with green and red candlesticks, time intervals and volumes on blue display.
Young fit sports woman exercising outside arena doing stomach ab workout using weighted ball and sitting on matt wearing active sports wear and headphones
Healthy hispanic woman doing mountain climbers during a cardio workout. Active women in sportswear taking a HIIT class at the gym

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