Tiffani Thiessen feels better at 50 than she did at 40. The actress – who turned 50 on January 23 – has revealed that she actually feels physically better than she did a decade ago. Tiffani – who has Harper, 13, and Holt, eight, with her husband Brady Smith – told PEOPLE: “I was way more nervous about turning 40. “I think because in my 40s, my focus was still on my children. “Also there were still a lot of bodily changes from pregnancy, hormones, that kind of stuff. I wasn’t able to really give myself any time to put into me.” Tiffani has been able to focus on her health and wellbeing more tha…