Sentence 1: It was high time to get started working out. 
 Sentence 3: It wasn't long before I was working out 
 Sentence 4:  I had a lot on my mind that day 
 Sentence 5:  It felt great to get a workout in! 
 Option 1: I went to the local gym and setup a membership. 
 Option 2: But I am so busy at work I don't have time for working out.