Slight soreness over the heart region after tempo training
Just wondering is it ever normal to have some slight soreness in the heart region in the chest couple a few hours after tempo training on the indoor trainer? Sometimes I get sore on the right side of the chest too, in this case, I know it's the lungs getting sore. The soreness only lasts 1 hour.
I have 15 minute warm up and another 15 minute cooldown in the session. No crazy high rpm interval but I do maintain 100 rpm during warm up and cool down. The main tempo interval is done averaging 80 rpm cadence (long 15% gradient climb) for 30 to 45 minutes. I breath hard during tempo but not like I'm losing breath.
Legs feel totally fine otherwise. The only lingering soreness are the muscles on the waist. I don't really feel the soreness on the waist muscles unless I do some stretching after training. On the bike or trainer, I don't feel any soreness at the waist at all. I feel most of the strain on the lungs during training.