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The JT interval is the time interval from the J point or the start of the J wave to the end of the T wave.It represents the total time of ventricular repolarization.
Young Asian man wiping sweat during interval at gym (workout, diet, training)
A fit young asian man working out vigorously with battle ropes. Alternating single arm waves. Whole body workout, conditioning and cardio at the gym.
A digital camera on a tripod, silhouetted against a dark blue twilight sky with a bright, out-of-focus moon and bokeh lights, capturing an interval shot.
Young Asian men laughing and talking during interval and breaks at the gym (hydration and protein)

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