If you've never lifted weights before, you can expect to gain about 1.5 kg of muscle in 2 to 3 months of training—but if you're already strong, you won't gain much more. Also, even with perfect training and diet, most people can't naturally build more than 25 kg of muscle above their starting point.

If you're new to weight training, you can expect to build about 1.5 kg of muscle in the first couple of months, but after six months, your gains slow down a lot—and you probably won't gain more than 3 kg of muscle in a year unless you're using drugs.

If you're new to weight training, you can expect to build about 1.5 kg of muscle in the first couple of months, but after six months, the gains slow down a lot—after that, you might only add half to two and a half kilos of muscle per year, depending on your body and how long you've been training.

If you're new to weight training, you can expect to build about 1.5 kg of muscle in the first couple of months, but after six months, your gains slow down a lot—and after that, you’ll probably only gain less than 2.5 kg of muscle per year if you’re not using steroids.

New lifters can expect to gain about 1–2 kg of muscle in the first few months, but after that, gains slow down dramatically—most people only add 2–4 kg per year even with years of training.

When people who’ve never lifted weights before start training, some gain just a little muscle—like half a kilo—while others gain a lot, up to three kilos, in about two to three months.