history: I took up running and I started seeing a huge improvement in my cardiovascular endurance. I felt so certain that I would hit my 5km goal in no time! I took up running and I started seeing a huge improvement in my cardiovascular endurance.
current: Nice, Was it hard to start?
next: Unimaginably hard. But once I got into it I couldn't stop. I'm feeling pretty certain that I'll hit my 5km goal in no time.