She Thought She Got Away With It
Leah certainly isn't the first to experience this; she won't be the last. Nonetheless, facing everyone after falling flat on your face, whether in person or on security footage, can't be easy.
Speaking of the footage, it seems rather unkind for the gym staff to play Leah's fall for everyone in the gym to see. After all, a stumble on the treadmill could happen to anyone.