Answer :
Hm... i am almost 100% sure its "C". the first one doesn't really make any sense because if you are working as hard as you can why make it longer same for the second option. And the fourth option.... your intensity should fluctuate through out the workout. Start with a warm up and work your way up to intensity for about 10 minutes then work your way back down for about 25 minutes. Keep doing this through out your workout...........
Brainliest answer?
Brainliest answer?