What is the biggest fitness challenge holding people back from starting or sticking to a program? ADVERTISEMENT 805 viewsSeptember 22, 2015 0 Angie September 22, 2015 0 Comments 10 Answers ActiveVotedNewestOldest 0 Harris12 Posted 0 Comments Their mind! Time is always the excuse behind everything, but the real obstacle here is the mind. I do not accept the excuse of not having even 90 minutes out of 168 hours (1 week). BTW, Woodbridge VA is a great place to live! You are viewing 1 out of 10 answers, click here to view all answers. Register or Login