Bangladesh batsman Sabbir Rahman has undergone an endoscopy which found that there was nothing wrong other than normal gastric pain and he is to resume practice on Thursday.Sabbir had complained of stomach pain after his unbeaten 64* in the second innings of the first Test against England in Chittagong on Monday.The batsman missed practice session on Wednesday.Bangladesh lost first test against England at Chittagong by 22 runs, though Sabbir batted brilliantly in his first test.Tigers will play the second and last Test against England at the Sher-e-Bangla National Stadium in Mirpur on Friday.