For a great workout, find a hill and ride your bike up it as fast as you can 10 times, suggests trainer Garret Seacat. “Don't want to stay in the same spot for the entire ride? Do some all-out sprint efforts on the bike for a minute 10 times anywhere!”
Seacat also recommends taking your run outside, especially if you’re feeling bored with your usual jog on a treadmill. Seeing the sights and feeling the wind in your hair will be refreshing, he says, and it’ll also distract from the “hurt” of your workout.