Ever since Tails had been zapped by the shard of the fake chaos emeralds, he has been feeling rather ill, not only physically, but emotionally too. While the zap itself didn't hit that much, the prolonged exposure was making the negative chaos energy in his body slowly build up, and it was making his stomach turn. He could not get any sleep at all that night because he felt too restless and had spent all of next day feeling like crap. He tried distracting himself with things, but it didn't help.
He took the shards to inside his workshop below his house, since he never moved from his home in Sonic Adventure, and tried to destroy them for good to see if the feeling would go away. However, the sickness overwhelmed him before he could even strike them. So now, he's sitting next to the wall across from his work table, breathing rather heavily. He's trying his best not to throw up and his ears were drooped.
The door to the workshop is unlocked so anyone could walk in and see Tails in a rather ugly state of baggy eyes and looking kinda green in the face. Also, an extra mini notebook is hidden in the background.