Plants droop when their water levels are off. Including both under and over watered plants. Check the soil and make sure the plant is located in appropriate sunlight.
It's pretty common for plants to go into shock when first moved/replanted. Another cause of dropping is insufficient water, or too much water for some plants(succulents).
Your plants may be drooping because they need to be watered. They could also be drooping because they need more or less sunlight than they are getting.