It was a relatively normal day for Leo. He got out of bed, did his normal routine (although he thinks he forgot something), and headed to the dojo to train with his brothers. Sure, he was sporting a pretty bad headache, but he would be fine. He probably should have taken some pain meds, but he didn't want to accidentally build up a tolerance to them. You never knew when you might get seriously injured and need them the most.

Leo got to the dojo and saw his brothers already sparring.

Raph saw him and waved him over. "Leo! Come on! You can have next round. You and me."

Leo grinned and walked over. "Oh yeah?" He unsheathed his swords. "Let's do this."

It started out great. Both of them perfectly balanced to keep the fight going for quite a while. However, Leo quickly realized that maybe he should have taken his headache a little more seriously.

After a particularly harsh wave of pain through his skull, Leo tried bailing. "Raph." He gulped. "Raph, I think I need a break."

Raph seemed to only get more riled up after hearing that. "Nonsense. You're fine. You're not even out of breath yet."

"No, Raph, that's not what I-" He broke off with a gasp and everything went black.

Donnie was perfectly content watching his two brothers spar. He noticed that something was off when Leo had one sluggish move. Usually, Leo didn't get slower throughout the fight and just powered through it. If he wasn't, that meant that something was really wrong.

"Raph, make sure you're not going to hard on him. It's just a spar," Donnie called over.

"Right," he responded.

He didn't slow down.

"Raph, I'm seri-" Before he could finish, he was cut off by Leo.

"Raph... Raph, I think I need a break."

Okay, if Leo was admitting it, you knew it was bad.

However, Raph continued to taunt him with, "Nonsense. You're fine. You're not even out of breath yet."

Donnie gulped.

Leo swayed.

"No, Raph, that's not what I-"

"Somebody catch him, he's gonna-!" Donnie yelled.

Raph caught him a moment before he hit the floor.

Leo awoke to someone muttering something. It was distorted for a few moments but as he woke up more, it was more clear.

"Leo, you idiot, why did this happen? Scoff... you really are a doofus sometimes." It was Donnie.

Leo blinked his eyes open slowly and started to sit up. He seemed to be in the med bay. He sat up and looked over to Donnie.

Donnie didn't hesitate to lightly punch him in the shoulder. The term 'lightly' used lightly (pun fully intended).

"Ow! What was that for?!"

"Oh, I don't know, maybe from scaring all of us half to death when you passed out randomly." Oh, boy. He was mad.

Leo gulped.

"I detected that you were low on blood sugar and dehydrated. Care to explain that one, Fearless?"

After Donnie said that, his other brothers entered the room.

Leo sighed. "Sorry. You guys know I have a high metabolism. I didn't think that I had a headache because I needed to eat something. Sorry." Leo shrunk into himself. He really didn't think about that.

Donnie then took his turn to sigh. "Leo, this is why we set up an alarm system on your phone for when you need to eat. Did you not charge it last night?" he inquired.

Ah... that's something he forgot. He also managed to forget to eat. Frick you, ADHD.

"Sorry."

Donnie surprised him by hugging him, his other brothers following his move. "Just don't do that again."

Leo smiled. He was glad someone cared about him.