With the coronavirus fucking up my work I taken a job in a warehouse. 6 days a week, 8 hours per day with a 30 minute lunch break. The job basically involves launching 20-30kg items into 18 wheel trucks for a straight 7.5 hours at a silly quick pace with the items flying down the belt one after the other. Monitored my heart rate on the 3rd shift and it stayed at a consecutive 130-150bpm for the entire 8 hours accept on the lunch break. My concern is calorie consumption. This must be burning a fuck load of calories but I have no idea how to calculate how many. And as such not sure how to adjust training and diet. Any ideas on how I could calculate an approximate calorie outtake from the work? Can I drop workouts back to 2 x each week and still make reasonable gains? Time is short and in all honesty my upper core is pretty burnt out when I get home.