I've been on a carb cycling diet for 2 months where big muscle groups (legs back and chest) it's high intake equivalent to 4 cups of rice a day and on the smaller groups (shoulders, arms, calves and core) it's a mid intake 2.5 cups of rice during the day and 2 days of low 1/2 cup of rice for the day. My question is I've lately been experiencing crazy soreness/exhaustion of my muscles that I've never had before. Looking for opinions if it's diet related, getting old, or over working (gym only last 1-1.5 hrs 6 days a week). I've only had this problem since I changed my diet but have gotten amazing results.