im new. any P90Xers?

I have just started the p90x and I am definitly feeling the pain. Before I started the p90x I was an enthusiast at the gym going at least 4 times a week. Definitely recommend the p90x to anyone and if your not sore your not "bringing it". Before I started p90x I lost 1 stone in three months and this was not done by going to the gym regularly but my diet, I went to the gym for a while and lost hardly anything and saw no results so i changed my diet and that's when the results started showing and the weight loss was notice able. Diet really is key.