Can i resume normal activities, such as lifting( i have a strenuous work life) 3 1/2 to 4 weeks after hiatal hernia surgerys (laproscopic)?

Give it more time: One of the causes of early hiatal hernia repair failure is sudden increase in pressure inside the abdomen like coughing, vomiting, lifting heavy stuff etc Body takes 6 weeks roughly to lay down the matrix needed for healing, tissue continues to heal for months afterwards but at 6 weeks after surgery it has reached 80% strength. Running jogging should be ok at this stage .