Objects and people take on a sharper look. There's a mild improvement in awareness. I have personally noticed this on many occasions. Some users notice an enhancement of auditory acuity. Enhanced mental alertness and concentration.
Most users notice being more sociable.
Some report a slight opening of the heart, with an increased interest in getting to know other people and being close to them. A sense of harmony could be experienced with others at a party or meeting. Slightly more energy initially, followed by a need to slow down. Although sometimes temporary weakness or dizziness can be experienced. Some users report feeling sleepier.