Individuals exhibit substantial variation in intra-session fatigue tolerance and inter-session recovery capacity following resistance training.

Study: Effects of Bench Press Volume on Performance, Recovery, and Physiological Response.

Even when people did the same workout with adjusted rest times, some still got more tired during the session and took longer to bounce back than others — showing that everyone’s body reacts differently.

Study: Acute responses of muscle oxygen saturation during different cluster training configurations in resistance-trained individuals

Different people feel more or less tired during the same workout and recover at different speeds afterward — this study shows that even when people do the same exercises, some get way more worn out than others, and their bodies bounce back differently over days.

Study: Physiological study of basketball training on athletes’ heart rate recovery and fatigue tolerance

Different athletes got tired at different rates during basketball training and recovered at different speeds afterward — showing that people’s bodies handle exercise fatigue and recovery in very different ways.

Study: Acute bench press performance responses to two inter-set rest periods in recreationally trained men and women.

Some people get tired faster than others during weightlifting, and this study shows that women, on average, stayed stronger longer than men during the same workout — proving that people handle fatigue differently.