To unlock The Fitness Lot, you need to collect Bee Hive and pay 150000 Coins to reclaim the Lot. Upon reclaiming the land, you need to fight agains the new Mall Cop Zombie on the waste land. After winning the battle, you get Repeater as a new Plant.
Plants vs Zombies Adventures The Fitness Lot – All stats
All the stat of Plants vs Zombies Adventures The Fitness Lot including new Plant and new Zombies to unlock as well as how to unlock or reclaim the Lot are shown in the table below:
Plants vs Zombies Adventures The Fitness Lot stats
||The Fitness Lot
||Mall Cop Zombie
||Available after collecting Bee Hive and paying 150000 Coins
For a complete guide on PvZ Adventures Beta, go here.