Kailiefitness

Adding incline or load to a walk measurably raises energy expenditure at a matched pace — well documented in lab studies, the same principle behind weighted rucking. Incline walking also recruits the lower body more than flat walking, supporting the core point. Where it slips: calling most people's cardio 'ineffective' or 'a waste of time' overreaches — flat walking, even at modest doses, is linked in large device-based cohorts to lower mortality. The mechanism (intensity and resistance raise energy cost) holds; the definitive tone about what 'doesn't work' is oversold.