Bernie Sanders says he’s feeling “much better” after having a heart attack and being released from a hospital.Sanders posted a video on Twitter Friday where he’s smiling and standing with his wife in a Las Vegas park.In the brief video, the Vermont senator said he “just got out of the hospital a few hours ago,” and added, “I’m feeling so much better.”He and his wife thanked everyone for their love and warm wishes.Sanders signed off by saying, “see you soon on the campaign trail.”