Why does it feel like you slept when you pull an all-nighter?

Last night was Gigi's birthday.  We had made plans for us to go home change and then reunite to faire la teuf later in the night.  I went home and got my valises ready for Amsterdam as I was leaving early in the morning.  Gigi's family surprised her by taking her to a nice restaurant on the Champs.  She wasn't too excited because it meant that it pushed our plans later.  She finished dinner around 11:30 and was over at my apartment by 12.  

The night before, Paula organized a dinner with her friend Aurélian as he works for an audio-visual production company in Paris called Première Heur and she wanted me to meet him.  He was super sympa and we bonded on things relating to art and creativity.  We had organized that we would do the teuf together the following night for Gigi's birthday.  I had originally organized us going to Chalet-des-Iles - the party I had gone to with Delphine in Bois-de-Boulogne, but we ended up going elsewhere.  Aurélian brought two of his other friends - Ed and Alex - who were also très sympa.  We danced the night away and since we only found ourself at the club at 1:30am, there was no point in sleeping.  Gigi and I watched the sunrise from my window and I left to the train station at 6:45am.  It was weird when the sun began to rise, I felt like I had slept the entire night.

This was when the little hiccup occurred.  Lindsay was supposed to come over to my apartment at 6:30am and we were going to head to Gare du Nord together as it is closer to my house.  I called her at 6:00am to ensure she was awake and her phone went straight to voicemail.  I was hoping she was just on the metro to me, but when I tried again a few minutes later, voicemail again and then AGAIN AND AGAIN.  This was when I started getting a little anxious.  I had my ticket for the train and Sensation and I had to just go!  I was hoping that I would find her at the train station...but again NO!  So I got on the train, alone....I really didn't have any other choice.  She knew the name of our hotel and perhaps she was already on the train and I was hoping that we would just find ourselves there.  The train started to move and ten minutes in my phone rang....it was Lindsay!  She had slept through her alarm!!!  She managed to get on the next train...the same one Florent was going to be on.  

I am glad that she managed to fix the little hiccup.  I arrived in Amsterdam at 11:45am and took the tram to my hotel in the South of the city - interestingly, when I booked the hotel...they said it was in the center - go figure.  I was exhausted, even after sleeping the entire four hour train ride.  When I arrived at the hotel Citizen M, they kindly told me I couldn't check in till 2pm.  How great.  All I wanted to do was sleep.  I left my bag here and took the opportunity to go and explore this area.  I found a nice strip with restaurants and shops and then relaxed at a park for a little while.  Lindsay's train has arrived and she is now on her way to meet me at the hotel.  She will drop off her bag and we will head out to go and meet Flo and his group of friends.  Then off to SENSATION!!!  I talked to some people who went last night....they said it was incredible.  I CAN'T WAIT!!!