Amar babu Debbarma, aged about 22 years residential of Balidhum ADC Village under Dharmanagar sub-Division, North Tripura District of Tripura state. He invented an exercise machine to reduce weight and stay fitted. That exercise machine completely made by bamboo and there is no use of nail or any other material as usual. Amar has given a name to that machine as “Not Spring, But Spring” is looked like abdomen exercise machine.