My take on shoes that promise a workout.

The back of your legs are called Hamstrings, not Thighs.

Gym time.

In Singapore, we have community center gyms. Basically a well equipped gym that allows people to use it on a per entry basis for a small fee. I paid $4 for a peak hour rate at Bt Panjang CC gym. Remind me to go at off peak hours next time 'cause crowds can mean more stress to think about which exercise to do next if you can't do the exercises you have planned.