I personally found that I get better results with my scriptures in the morning as I can focus a little better at that time of day. I also workout in the morning- the gym is less crowded and there are far fewer conflicts with my schedule, the greatest obstacle is making it a habit. I did find that when I worked out with friends that I am more motivated as I am a competitive person so I either am trying to catch up or stay ahead of them- so a buddy is great.