schwinn upright exercise bike LISS Cardio
https://periodicos.ufpel.edu.br/ojs2/index.php/dissertatio/user/viewPublicProfile/203971
Even the best exercise bicycles LISS are less bulky compared to a treadmill or even a cross-trainer, plus so you would swerve the journey to and out of the gymnasium (time-efficient for those who have active schedules)