Workout

 After almost 10 days being lazy I started to do workout again. I missed it. I was doing very well: 1 hour exercises 3 times at week, 1 hour stationary bike 3 to 4 times at week. 
Latelly I'm sleeping very bad, I wake up many times at night... 4am, 5am, 6am... I think this is because I'm very stressed, too many problems at work... I wonder if doing exercises will help me to sleep better