so should i run for 1 min. at 6 mph on treadmill then go down to 2 mph for a min then back up to 6+ mph then go back down and do that for how long? pls commet back im very intrested
hambone1ful 1 month ago
so should i run for 1 min. at 6 mph on treadmill then go down to 2 mph for a min then back up to 6+ mph then go back down and do that for how long? pls commet back im very intrested
hambone1ful 1 month ago