I am a 40yr old female. I exercise regularly, at least 4 times a week. Yesterday while at the gym I experienced some tingling in my left cheek. I did twenty minutes on the arc and then proceeded to the treadmill. WHile on the treadmill I walked for 6 minuted and then jogged for 4 minuted, walked for three and then statred jogging. After jogging about two minutes I noticed thta my left cheek felt tingling. I touched it to make sure, I could still feel my touch, I made a few faces at myself in the mirror, everything seemed to work fine. I stopped jogging and reduced to a walk and continued walking for another 10 mins. The tingling lasted about 1 min. As soon as I reduced my speed and began to cool down it was gone. Is this something to worry about? I have recently statred taking Effexor XL for flushing and anxiety, 35ml once a day. I have been on this for about 1 1/2 weeks. Could that have been a side effect? Today the left cheek just feels a bit more noticeable than the other but no tingling. Could it be sinuses? Should I be alarmed or just this be from overexerion? ( I don't usually jog ) thanks