In the video, shared on social media, Shubhanshu Shukla is seen being helped as he takes a few steps. (Screengrab/Instagram/gagan.shux)Shubhanshu Shukla, the first Indian astronaut to travel to the International Space Station (ISS), has posted a video online showing his physical recovery after spending 18 days aboard the ISS.In the video, shared on social media, Shukla is seen being assisted as he takes a few steps. Later, he is shown walking on a treadmill. The video gives a look into the early days of rehabilitation after time in microgravity.“I have received a lot of messages regarding my health and wishing me a speedy recovery,” he wrote in the caption. “I want to thank you all and also give an update.” View this post on Instagram A post shared by Shubhanshu Shukla (@gagan.shux)Shukla explained that space travel changes the body in many ways, including fluid shifts, changes in heart rate, loss of balance and muscle strength. “These are adaptations to the new environment,” he said, adding, “Once the body gets used to this and we return to gravity, these adjustments happen once again.”Also read | Watch: ‘Takes skill to be still’ — Shubhanshu Shukla reflects on life at ISSHe said that while recovery times can be different for each astronaut, the body begins to adapt quickly. “I was surprised to observe the pace with which our body can adjust to new settings,” he noted.“In the pursuit of the unknown space you get to know more about yourself,” Shukla said in the video.According to Union Minister Jitendra Singh, Shukla and the three other astronauts from the mission are under quarantine until 23 July. This is standard after a space flight to monitor their health and help them adjust to Earth’s gravity.Experts say that staying in space for long periods can cause muscle and bone loss and problems with balance. Physical rehabilitation helps astronauts return to normal activity.Story continues below this adShukla’s flight is seen as a major step in India’s space journey. During the mission, he orbited Earth more than 310 times and travelled over 13 million km.Stay updated with the latest - Click here to follow us on Instagram© IE Online Media Services Pvt LtdTags:Shubhanshu Shukla