Nothing standing in 49ers’ way against Dolphins — besides that 8,000-mile flight they took last week

Kyle Shanahan said he “felt like crap” for three or four days. For George Kittle, “it was really weird” getting back on his normal sleep schedule. Fred Warner was groggy for “about a day,” he said. “And now we’re ready to rock.” The longtime linebacker summed up the general sentiment in the 49