Isaiah Jackson doesn’t know the exact number of calories he was eating per day, but it was a lot. Every day in the offseason, he ate four meals. Between meals, he mixed in two protein shakes. Somewhere in there, he found time to get into the gym, lifting five to seven times every week. Usually, he brought a friend or one of his brothers with him to keep him motivated and add some kind of competitive element to the workouts. The result for the second-year big man out of Kentucky was more than 15 pounds of muscle, much of it in his legs to bulk up to 221. There’s no shortage of strong, powerful frontcourt players in the Eastern Conference, and Jackson hopes the extra weight will allow himself to match up better and stand his ground in the post.