Originally Posted by
Tom Stormcrowe
First off, as a 50+, you are going to be more concerned about your max HR than a younger racer, and your recovery will be slower. I'd ease into it, with shorter intervals and not run the HR up to 220 if you can help it. I'd also get a cardiac workup done to make sure what YOUR particular MaxHR should be and whether your ticker can actually stand this.
Thanks for your concern, Tom. I'm pretty clued up on my LTHR and my max HR. After racing the crits, among other things, the one thing I'm confident can stand this is my heart. It's like a steam hammer. Legs, they're a different matter.