Erik joined the others. Doing laps around the gym wasn't exactly exciting, but at least this would work towards completing his daily quests. There was also the 'Conquer the training gauntlet' quest, which required him to complete training daily quests for a week.
Luckily, doing that wasn't particularly hard for Erik. Thanks to his recent level-ups, he got much stronger, and his stamina increased. The change didn't escape Professor McAllister.
Erik's performance had clearly improved overnight—his movements were faster and more controlled than before.
Besides, there were obvious physical changes in his student: more muscle mass and better definition.
The professor noticed Erik's clothes fitting more snugly, showing his physical development. Though unusual, such quick changes weren't unheard of, since their world had access to mana-infused plant supplements.
These included a special serum that could permanently boost physical capabilities.