On the fourth episode of UFC 323 Embedded,  Joshua Van arrives in Las Vegas for UFC 323 Fight Week; Athletes make their check in rounds at the UFC APEX; Chris Duncan talks about why fighting is so important to him;  Payton Talbott discusses cravings during fight week; Champ  Alexandre Pantoja hits pads in the Athlete Hotel;  Bogdan Guskov has a helicopter ride over the Las Vegas Strip; Champ  Merab Dvalishvili starts his weight cut. UFC 323 takes place at T-Mobile Arena on Saturday and features two world title bouts. Bantamweight champion Merab Dvalishvili puts his title on the line in the fight card’s main event in a rematch against former titleholder Petr Yan .