Warmup

LC:  (hold fixation for 2-3 breaths)

3 mins @ 2x32kg; 5 rpm 

3 mins @ 2x32kg; 5 rpm 

3 mins @ 2x32kg; 5 rpm 

Ttl time/reps:  9 mins/ 45 reps

Masked Run:

2 miles in 20 mins

Stretched and done.

For those wondering, the mask I use is a standard firefighter issue Scott SCBA mask.  It restricts air intake enough that you have to focus on breathing rhythm or you lose your wind quickly.