Head for the Hills

Able to sustain 75% HRmax for >5 min using 50×19 @ 75-80 RPM and >1 min @ >95 RPM, but not able to recover to <70% HRmax using the same gear ratio @ ~70 RPM.  Used 50×21 @ ~70 RPM to recover to <70% HRmax in a reasonable amount time.

	Mile			Avg MPH			Avg HR BPM			Time
Lap	Climb	Sprint	Recover	Climb	Sprint	Recover	Climb	Sprint	Recover	Recover
1	0.14	0.33	2.84	16.7	19.6	14.3	151	168	151	11:56
2	0.14	0.33	1.21	16.5	20.1	13.2	144	165	151	5:30
3	0.14	0.33	1.28	16.8	19.9	13.2	140	166	151	5:51
4	0.14	0.33	1.54	16.6	19.8	13.1	141	166	149	7:03
5	0.14	0.35	0.87	17.3	20.8	12.2	142	166	151	4:17
6	0.14	0.34	0.68	16.5	20.3	11.9	141	166	154	3:25
7	0.14	0.36	0.96	16.8	21.4	11.6	143	170	152	4:57
8	0.14	0.37	0.66	16.8	22.4	10.8	143	170	159	3:39