['i was very nervous and apprehensive when I first started lifting weights again.', "Good job, it's always good to hit the gym and to stay in shape.  I just started again as well.", 'Awesome! I got over my fear quickly too.']
Just keep at it and I'll do the same! We will be shredded in no time!
When I first started working out, I was very nervous and apprehensive while lifting weights.