35 days consists of 'Physical and Skills Training'. This includes hours of rigorous exercises apart from other tests and skills training such as blindfolded team assembly, weapons training, demolition, navigation, communication, medical and cooking skills. Probationers are also taught animal handling skills, Probationers go without food for 4 days, they have to minimize water consumption up to 1 litre water for 3 days and be able to go without sleep for 7 days. A 10 kg sandbag becomes a permanent buddy for the probationer. Routine speed marches and runs of 10 km, 20 km, 30 km and 40 km with full battle gears are conducted. Probationers must be exceptional navigators in areas where there is no network signal, no roads or landmarks and sand dunes that keep shifting every night.[40] In Parachute training, candidates then complete a 3-week Basic Parachute Course at the Indian Army's Parachute Training School in Agra. insertion and extraction techniques and have to learn several languages. Many probationers are not able to complete this stage of the course itself and up to 20% drop out here. Day 45: The 36-hour Para SF stress test includes 36 hours of exercises, maneuvers, insertion, extraction where the probationers stress capabilities are put to the test. It starts with a 10 km speed march with 30 kg battle loads and an additional 40 kg each. This is followed by various exercises included lifting buddies over long periods. This is followed by weight shifting. Weight shifting has three rounds, where various kinds of weights have to be shifted such as 40 litres of jerry cans, tyre trucks and wooden logs up to 85 kg in weight. During the 11th hour, trial by water is conducted – simulated drowning, allowing only the bare minimum oxygen over a long period of time. This is to test probationers panic reactions under stress. The hands are also tied later on and using ropes the probationers are pulled under water. It is well known that hypoxia and blackout due to lack of oxygen is common during this test. The first 16 hours are completed without a drop of water or food. This is followed by immediate observational skills and operation tactics under pressure which included probationary having to recall objects placed in their exercises. This is followed by 10 km speed march and 6 hours of continuous exercises. Finally practical combat skills tested such as placing