[heavy footsteps, running]
[rhythmic footsteps on treadmill]
[frantic breathing, grunting escalates]
[grunting de-escalates]
[heavy footsteps, running]
[heavy breathing, intermittent grunting]
[rhythmic footsteps on treadmill resume]
[heavy breathing]
[heavy footsteps, running]
[rhythmic footsteps on treadmill resume]
[loud grunting]
[rhythmic footsteps on treadmill continue]
[heavy footsteps, running]
[arms whoosh]
[frantic breathing, grunting escalates]
[rhythmic footsteps on treadmill resume]
[heavy breathing]
[heavy footsteps, running]
[arms whoosh]
[grunting escalates intensely]
[grunting and breathing slowly de-escalates]
[steady, wheezing breaths]
[heavy footsteps, running]
[rhythmic footsteps on treadmill resume]
[deep, low grunting]
[heavy footsteps, running]
[rhythmic footsteps on treadmill resume]
[frantic breathing, grunting escalates]
[rhythmic footsteps on treadmill continue]
[heavy footsteps, running]
[arms whoosh]
[frantic breathing, grunting escalates intensely]
[grunting and breathing slowly de-escalates]
[rhythmic footsteps on treadmill resume]
[heavy breathing, grunting escalates]
[rhythmic footsteps on treadmill resume]
[heavy breathing]
[deep, low grunting, heavy breathing]
[breathing slowly de-escalates]
[heavy, irregular footsteps, running]
[footsteps, walking]
[rhythmic footsteps on treadmill resume, squeaking]
[heavy breathing]
[slow, steady footsteps]
[deep, low grunting, heavy breathing]
[heavy, irregular footsteps, running]
[heavy footsteps, running]
[frantic breathing, shaking, breathing and grunting escalates]
[heavy footsteps, running]
[frantic breathing, shaking, breathing and grunting escalates]
[heavy footsteps, running]
[frantic breathing, shaking, breathing and grunting escalates]
[heavy breathing, grunting slowly de-escalates]
[heavy footsteps, running]
[frantic breathing, shaking, breathing and grunting escalates]
[heavy footsteps, running]
[frantic breathing, shaking, breathing and grunting escalates intensely]
[heavy footsteps, running]
[frantic breathing, shaking, breathing and grunting escalates]
[heavy breathing]
[deep, low grunting, heavy breathing]