Originally Posted by
Psyclismo
Out of breath, significantly burning legs = 180 bmp. Light burning in the legs without any real sense of needing to slow down = 171 bpm, which is what I've been using as my cap just before I hit my LT. Totally easy conversational pace, no shortness of breath, can ride all day = 160bpm.
What's your HR when you are riding by yourself at your own pace? It sounds like you need to increase your FTP (Functional Threshold Power) which you can do by spending a significant portion of your ride at 90-100% of your LTHR. Google SST (sweet spot training) for some more suggestions.