If you're exercising, that's normal. The key is whether it slows back down to your usual resting rate pretty quickly after you stop exercising. If your heart rate
suddenly goes to 130 for no apparent reason, there could be several factors. These include stress
, fever, heart arrhythmias, anemia
, certain medications, caffeine, dehydration
, lack of sleep, panic disorder, and other issues... some serious and some not. If you're worried, check with your doctor. Most times, this isn't serious - and finding out may make you feel better.