Red: enter a cycling session with calories, but leave calories_exercise
and calories_cool_down blank.

Red: enter a cycling session with distance, but leave distance_exercise
and distance_cool_down blank.

 On branch master
 Your branch is up-to-date with 'origin/master'.

 Changes to be committed:
	modified:   features/add_exzbike.feature
	modified:   features/step_definitions/exzbike_steps.rb
Changed up the tests for exzbike form.  Hopefully this is an improvement, but
I am still quite doubtful.  I have not gotten the knack of cucumber yet.

 On branch experimental
 Changes to be committed:
	modified:   app/models/exzbike.rb
	modified:   features/add_exzbike.feature
	modified:   features/step_definitions/exzbike_steps.rb
All tests are green.  I do not believe I did this correctly.  I do not
believe in anything anymore.  :FROWNY_FACE:

 On branch experimental
 Changes to be committed:
	modified:   app/models/exzbike.rb
	modified:   features/add_exzbike.feature
	modified:   features/step_definitions/exzbike_steps.rb