I've been on TRT for about a month. Test C 300mg/2 weeks. Just this last week while Road Cycling I noticed that my heart rate max went up by 12 beats per minute. Usually I can stay in my HR max zone for about a minute before I blow up. But now I can hold the power at a higher HR for 2-3 minutes. Do you think this is due to a higher RBC carrying more oxygen? I'm definitely not complaining! Anyone else have similar results?