He spent part of his childhood in an orphanage. He was the school champion in checkers and learned chess while in the pre-trial detention centre. He worked as a mechanic at a railway car repair plant. In the spring of 2022, he conducted several anti-war actions alone. Due to profane inscriptions on the posters supporting the war, he was fined. After the announcement of mobilisation, Kudryashov received a draft notice. On the same day he was detained with violence and accused of preparing to set fire to the military recruitment office. Kudryashov [told](https://ovd.news/express-news/2022/12/23/tverskoy-aktivist-rasskazal-o-falsifikacii-dokazatelstv-po-ego-delu-i-pytkah) a lawyer that during his detention, officers of the Tver FSB planted incendiary mixtures on him and that he was repeatedly tortured in order to get the password to his smartphone and force him to sign a confession. The Investigative Committee refused to open a criminal case on Kudryashov's torture claim. On 14 June 2023, Kudryashov went on hunger strike because he was not given vegetarian food, his complaints were not forwarded to the prosecutor's office, and the head of the pre-trial detention centre refused to meet with him. On 20 June, Kudryashov was sentenced to six years in a strict regime penal colony. On 18 July, Kudryashov stopped his hunger strike. On 27 July, it became known that Kudryashov was sent to hospital. Later, lawyer Maxim Kharchenko said that Kudryashov was in the psychiatric ward in an immobilised state. According to him, the escorts said that Kudryashov was tied up as he could harm others and himself. The convict does not respond to speech. "Zona Solidarnosti" ("Solidarity Zone") suggests that Kudryashov could have been subjected to punitive psychiatry methods as revenge by the head of pre-trial detention centre in Tver, his namesake Alexei Kudryashov. The lawyer claims that on 18 July, the first day of his client's hunger strike, he did not notice any changes in his mental state. "Zona Solidarnosti" also stated that the Federal Penitentiary Service officers could have forged Ivan Kudryashov's letters: the human rights activists received a reply from the convict, but the handwriting in it does not match the handwriting in the previous letters. "Kudryashov" writes that he had a nervous breakdown and broke a tap and a sink in two cells, after which he was sent to hospital, where he is being treated and is on the mend. "We believe that in this way the hospital management is trying to mislead the public and extinguish the scandal," writes "Zona Solidarnosti". On 8 August, the lawyer said that Kudryashov had recovered. On 29 September 2023, the court of appeal reduced the sentence to four years and ten months.