Feeling lighter after 5 elements

Last week after we did the 5 elements lesson I got very tired and fell asleep on the couch before going to bed. When I woke up and walked to my bedroom my body felt like it was floating a little bit or like there was less gravity weighing me down. 

Is this something related to the 5 elements practice or was is just some random sensation because I took that nap after being exhausted from the 5 elements.