Why am I so lazy all of a sudden?

Idk what the heck happened. Usually I have my moments of this here and now but idk. I just have no effing motivation or anything. I just will not get up for school cuz I just wanna lay there and I'm so exahusted (I am usuaully like this but it's been worse lately) and my friend is supposed to come over in about 45 minutes and in my brain I'm like omfg I gotta get dressed but my body and other half of brain are like I can't... I just gotta lay here in my pj's and messy hair and stay on the computer. I don't even really wanna hang out with my friends tooo much anymore. I also usually paint my nails every week and I haven't in like three cuz I am just LAZY. and even my clothes too I gotta wash em but I just... cann''ttt. I hate this, it ain't a good feeling and I am also extremely tired too like right now my eyes are so ungodly heavy but I wouldn't be able to sleep... ughh help me. idk whats wrong with me. Thanks so much everyone!