After apps I felt surprisingly relaxed. You get a big burden off yourself, since basically these 3.5 years of high school were geared towards college apps and now you’re done. For some, senioritis hits hard–all in all, there’s a general feeling of relaxation and relief definitely.
As the time for decisions approached however, I felt really anxious for some decisions. I remember I couldn’t sleep some nights because I was expecting a decision in the afternoon of the following day. This anxiety is common, and usually hits when decisions are about to reach.