Configure whenever schedule and logging for rake task

config/schedule.rb

@@ -0,0 +1,26 @@
+# Use this file to easily define all of your cron jobs.
+#
+# It's helpful, but not entirely necessary to understand cron before proceeding.
+# http://en.wikipedia.org/wiki/Cron
+
+# Example:
+#
+# set :output, "/path/to/my/cron_log.log"
+#
+# every 2.hours do
+#   command "/usr/bin/some_great_command"
+#   runner "MyModel.some_method"
+#   rake "some:great:rake:task"
+# end
+#
+# every 4.days do
+#   runner "AnotherModel.prune_old_records"
+# end
+
+# Learn more: http://github.com/javan/whenever
+
+set :output, Whenever.path + '/log/whenever.log'
+
+every 1.day, at: '3:00 am' do
+  rake 'detect_exercise_anomalies:with_at_least[50,50]'
+end