Harm

The dry mouth feeling will go away once your body adapts to the water its probably craving sugar drinks that you are use too. Water isnt the only solution cut back on sodium and sugar and that dry mouth should go away.

Im not sure what type of heart rate monitors people are using but here is a little bout me. I train in boxing with a private coach@2 x a week@60min, my cardio consists of HIIT(high intensity interval training@25min variation of sprints 8.0 mph flat to incline sprints at 11.0 incline with 11.0 speed to finish with 15sec…