Possible reasons :
Over watering
Under watering
Heat but generally associate to under watering
Roots issue ( seems too healthy to be that )
Light just turned on and the plant leaves are pointing down because she was sleeping
Bet on one of the 2 first reasons
Hello brother, i think its time to water... ditch your finger in to soil and see if its dry, then you can water your plants. They will rise their leaves shortly
Looks to be over-watered. Try lifting the weight of the pot, and see if it feels super heavy/waterlogged. If so, dry it out for a few days before watering again. Good luck and nice looking plants otherwise!