LuceLine West Out&Back: 79 minutes, 4.68 miles, 17:30/3.5, HR=150. I decided today was the day to get back to interval training. I’ve made a few failed attempts at picking it up at week three, so decided to go back to the beginning. The temperature is 93 and feels like 95, according to weather.com. What was I thinking? My heart rate was higher than normal, but I was handling it just fine. About mile three Hanna started to make a weird snorting sound whenever we picked up the pace, so we gave it up and walked the rest.