Looking for a body swap manga

[neetkaireader]

Idk how old this manga is it might be a webtoon and not manga specifically. So the story follows ml and fl switching bodies as a part of an experiment to cure something which I forgot. They have to hug at time intervals as part of the experiment. Fl and ml both r depressed by their life I think. I can't recall much else but later chapters included other characters body swapping including a fitness guy . The ending I think the research lab exploded cuz the people who did they experiment r evil.