Yes, things could be much worse. If you were a baby blue whale, you could gain up to 10 pounds (4.5 kg) per hour. Not per day – per HOUR.
A nursing blue whale mother produces over 50 gallons (200 liters) of milk a day. The milk contains 35 to 50% milk fat and allows the calf to gain weight at a rate of up to 10 pounds an hour or over 250 pounds (113 kg) a day!