Pandora's jock

Previously

…Mark sank back into his armchair, his body a symphony of aches and pains, but his mind alight with a new, fierce determination. He had summoned a Fitness Ghost, and it had done exactly what it promised: pushed him beyond his limits. The race against Anna and Serina was no longer just a distant goal; it was a tangible challenge, and for the first time, he felt a sliver of genuine hope. But as the last vestiges of the Ghost’s presence faded, a small, cold knot of unease settled in his stomach. He had asked for power, and the Ghost had delivered. But he couldn't shake the feeling that this power came with a price, a price he was only just beginning to understand.