I am a frequent sufferer of bigeminy and am hoping someone can answer a question for me. I often get bigeminy when I get a rush of adrenaline, such as if I get startled, angry, emotional, etc. I also get it during exercise, but only until a certain point where my heart rate gets fast enough to overcome it. My question is, why do I get it so much more when I am walking in cold air? It seems the colder the temperature, the more frequently I get it. Does anyone here get bigeminy often? How do you deal with it? Mine started about 6 months post ablation for IST. And it seems like I am getting it more and more often. I could handle it better if it only happened when I was nervous, but I totally hate to get it during exercise. I bought a new bike last summer and barely rode it because every time I got on and and biked for a minute or so, I'd get bigeminy. I am a 38 year old female, hoping to have another child soon, but the heart stuff really scares me. Any insight or ways of coping that any of you could share with me would be so appreciated.