Help

I work out 45 min to and hour 5-6 days a week...I walk close to 5 miles or more every day at work. for breakfast is just a protein bar and lunches usually consist of beef rice and broccoli. I don't drink soda at all, gal of water a day, and dinners are hit or miss in healthy but I always watch my serving sizes. Iv been stuck between 208-210LBs for at least a year now. I don't understand