Patroclus bit back the response of 'you would hold back if it were me', knowing it probably wouldn't help the situation. Still, he supposed he could offer to help - or simply join the 'fight club' himself. He wasn't really a fighter but perhaps it would spur Achilles on from the memory of their untimely deaths which he was sure could have affected his fighting, negatively or positively. It was a terrible idea, yes, but he did somewhat want to learn to be able to fight on his own, just in case. Relying on Achilles for protection wasn't fair and they weren't as joined at the hip here with their seperate professions.
"They shan't think you weak, Achilles," he curled a hand around his wrist and walked them both over to the bed, sitting on the edge and taking both of Achilles' hands in his. "You have just spent the past ten years of our lives fighting with a spear and a shield, not with your fists," he pointed out, pressing kisses to the grazes on his knuckles. "While I do not doubt you are among the best there are other Demigods here, yes?" he tilted his head with a hopefully encouraging smile. "We do not know how people here measure up to their peers and enemies back home. Perhaps these are fights consolidating the best of all of these worlds into one."