LT2 indicated by vertical red bars, 15 min into Criterium, they try to drop you, hang on Dave  

Dave recovers, hits cruise control mid-race, then hard LT2 work to the finish line, ~6 matches burned 

Cool NoCal morning weather, 25-30 mph crit speeds, Dave picks rite crit bike kit, barely touches 38.0C

HR@LT1=155, HR@LT2=162, respiration spikes @11:10 when LT2 and hard racing begins

Watch PPG lags Polar H10;

Note: watch GPS speed in debugging

Both seem accurate in this case, heavy exercise underway

Motion = 3 Hz during Crit Cruise phase, otherwise known as cadence = 90 rpm

Motion includes 3-4 Hz efforts during Crit Finish phase, otherwise known as cadence = 90-120 rpm, slightly harder gear

Warmup

Lactate Threshold 

~4 more LT2 matches burned

too much coffee  

Gray values are Respiration Rate derived from QRS Height changes

too much coffee, too much racing. 

Another Cool Day 

Right on. 

Note: GPS Speed in debugging.

Cadence 90 - 120 rpm;

Note: cadence half motion 3-4 hz

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HR 120 bpm;

GPS 15 - 20 mph;

DFA: well above lactate threshold. 

HR: 160 - 170 bpm;

GPS: 25 - 33 mph

LT2: Five Matches burned, most in the final push to finish line. 

HR: 173 bpm;

GPS: 34 mph

Not even 38 C. 

Cadence 90 - 100 rpm;

Note: cadence half motion 2.5-3.5 hz

HR = 162 bpm;

Major Peaks = 10;

Between LT1 - LT2;

! Skyscrapers ! 

One tiny Pixel Watch 4;

This 3.5 hour HR chart auto-generated in real-time

... as it happens...