Beat the heat by running around the UA mall in nothing but your skivvies this Friday, Oct. 16 for the annual Runderwear. Take off your clothes and put them in the pile along with the rest of the stripping runners where they will be donated to Big Brother Big Sisters of Tucson. After the short jaunt, the event will culminate with CatFest, a free concert on the UA mall featuring Bassjackers and T-Pain. Join the rest of your half-naked colleagues to dance the night away. Check in starts at 5 p.m. with the run starting promptly at 6 p.m. and the concert following at 6:10. Get to the Facebook event page for more info.