What do you eat to gain weight healthily?

1. 300-500 calorie surplus as a Novice Male, 200-300 as either Novice Female or Intermediate/Advanced Male. You may want to increase your calories as your metabolism may adapt mostly from weight gain, but also metabolic processes.
2. Meal Frequency/Timing is only slightly relevant; mostly from an energy level or hunger standpoint, but also Post Workout (which only applies to fasted people). You have to see what works best. Some like IF (like me); some pass out after 3 hours.
3. AMDR's are a good place to start for macros. 20-35% for fat, 15-35% protein, 40-65% for carbs; I'd stick to lower fat (It matters kind of, in a surplus as carbs/protein supply fuel for anaerobic metabolism, and fat gets stored directly unless burned off). Protein I'd say 20-30% depending on calories. 1.8g per kilo is a good number for protein (so maybe 0.6-1g per pound). Carbs would make up the rest.
4. Heavy Big Compounds w/ Progressive overload most workouts> Accessory Compounds (this is where volume is) PO every few workouts> Isolations (especially rotator cuff exercises) PO every 2 weeks. Workout your entire body, no Ab/Bicep/Chest/Trap only workouts; Leg and Back exercises should get a lot of emphasis.
5. High Saturated Fat and Sugar intake can lead to inflammation; if inflammation is a problem for you than decrease these nutrients. However Saturated Fat can improve hormone levels. Moderation is key.
6. You get 10-20% of your calories from anything you want.
7. You will not gain a significant amount of muscle without fat gain.
8. Sleep 7-10 hours most nights. No excuses.
9. Don't waste money on pre workouts; Coffee/tea is acceptable though.
10. Alcohol is okay in moderation.
11. Don't train and eat like a wuss.

List of things to do/eat to gain weight:
1. EAT BREAKFAST! This means within 30 mins of waking.
For example: 1 small piece of fruit, 1-2 egg or egg whites, 8oz of skim or 1% milk, small bowl of oatmeal or two pieces of multi grain bread.
2. Eat every 2-3 hours. Not big meals, but complete meals. Try to get good unsaturated fats, complex carbs and protein all in.
3. Do not think that fast food is the answer. You can gain weight by still eating healthy.
4. Do not be afraid to gain muscle. It is incredibly hard for a women without certain tools to look like a bodybuilder. Stop thinking that putting on muscle will do that to you.
5. Find a good, quality, clean protein supplement. This means do not go to Walmart and buy the cheapest thing on the shelf. Do research.
6. Find a protein powder that has a "time release" type of formula. Something that uses different metabolic rates so that you will fuel your muscles for a greater period of time after a lift.
7. Make your gym time count. Try to limit yourself to the most productive 1hr you can. Then drink your protein and eat about two hours again after your protein shake.
8. Dont forget water. Lots of water. More then you think you should drink.
9. REST! People over look this so often. You do not grow at the gym. you grow when you sleep and on rest days. Get AT LEAST 8 hours of sleep a night. Make sure you have 2 rest days a week. Preferably not in a row.
10. Lift in the 4-8 rep range. Make the weight heavy enough to almost reach failure on every set. Don't be afraid to use drop sets and forced reps OCCASIONALLY. Try to get good, slow, clean reps 95% of your workout. The last rep of the exercise should be a drop set or forced rep.
11. FInally, have a 1/4 cup of greek yogurt or cottage cheese 30 mins before sleeping.

Those are the basics. I am very confident that will get you gaining.

List of things to do/eat to gain weight:
1. EAT BREAKFAST! This means within 30 mins of waking.
For example: 1 small piece of fruit, 1-2 egg or egg whites, 8oz of skim or 1% milk, small bowl of oatmeal or two pieces of multi grain bread.
2. Eat every 2-3 hours. Not big meals, but complete meals. Try to get good unsaturated fats, complex carbs and protein all in.
3. Do not think that fast food is the answer. You can gain weight by still eating healthy.
4. Do not be afraid to gain muscle. It is incredibly hard for a women without certain tools to look like a bodybuilder. Stop thinking that putting on muscle will do that to you.
5. Find a good, quality, clean protein supplement. This means do not go to Walmart and buy the cheapest thing on the shelf. Do research.
6. Find a protein powder that has a "time release" type of formula. Something that uses different metabolic rates so that you will fuel your muscles for a greater period of time after a lift.
7. Make your gym time count. Try to limit yourself to the most productive 1hr you can. Then drink your protein and eat about two hours again after your protein shake.
8. Dont forget water. Lots of water. More then you think you should drink.
9. REST! People over look this so often. You do not grow at the gym. you grow when you sleep and on rest days. Get AT LEAST 8 hours of sleep a night. Make sure you have 2 rest days a week. Preferably not in a row.
10. Lift in the 4-8 rep range. Make the weight heavy enough to almost reach failure on every set. Don't be afraid to use drop sets and forced reps OCCASIONALLY. Try to get good, slow, clean reps 95% of your workout. The last rep of the exercise should be a drop set or forced rep.
11. FInally, have a 1/4 cup of greek yogurt or cottage cheese 30 mins before sleeping.

Those are the basics. I am very confident that will get you gaining.

Have you considered changing your username from cleanscience to broscience?

You people are lame. He at least tried to help the original poster while you people provided no insight whatsoever.

He gave decent advice for someone that wants to gain weight without gaining fat. Sure, there is controversy with some of the points mentioned (ie - there is debate among experts about whether some of these statements are true).

Following these rules doesn't make you a 'bro', an orange spray tan, gelled out hair and a bad attitude makes you a 'bro'.

Can anyone recommend non animal based proteins and a healthy way to gain weight as a vegan. thanks

I would like to gain muscle but not fat! Thank you for your advice.

You can't really gain appreciable muscle without gaining some fat. If you just want to work on body composition then eat to a maintenance level of calories, get plenty of protein, and hit the weight room with an actual tried and true hypertrophy lifting program.

If you want to actually put on muscle you need to eat at a surplus of calories...shoot for around 250 calories more than your body needs to maintain to minimize fat gain and maximize muscle growth. Also, hit the weight room with an actual tried and true hypertrophy lifting program. You will slowly put on weight (muscle & fat)...then you cut again to reduce your BF% and reveal your newly established muscle.

List of things to do/eat to gain weight:
1. EAT BREAKFAST! This means within 30 mins of waking.
For example: 1 small piece of fruit, 1-2 egg or egg whites, 8oz of skim or 1% milk, small bowl of oatmeal or two pieces of multi grain bread.
2. Eat every 2-3 hours. Not big meals, but complete meals. Try to get good unsaturated fats, complex carbs and protein all in.
3. Do not think that fast food is the answer. You can gain weight by still eating healthy.
4. Do not be afraid to gain muscle. It is incredibly hard for a women without certain tools to look like a bodybuilder. Stop thinking that putting on muscle will do that to you.
5. Find a good, quality, clean protein supplement. This means do not go to Walmart and buy the cheapest thing on the shelf. Do research.
6. Find a protein powder that has a "time release" type of formula. Something that uses different metabolic rates so that you will fuel your muscles for a greater period of time after a lift.
7. Make your gym time count. Try to limit yourself to the most productive 1hr you can. Then drink your protein and eat about two hours again after your protein shake.
8. Dont forget water. Lots of water. More then you think you should drink.
9. REST! People over look this so often. You do not grow at the gym. you grow when you sleep and on rest days. Get AT LEAST 8 hours of sleep a night. Make sure you have 2 rest days a week. Preferably not in a row.
10. Lift in the 4-8 rep range. Make the weight heavy enough to almost reach failure on every set. Don't be afraid to use drop sets and forced reps OCCASIONALLY. Try to get good, slow, clean reps 95% of your workout. The last rep of the exercise should be a drop set or forced rep.
11. FInally, have a 1/4 cup of greek yogurt or cottage cheese 30 mins before sleeping.

Those are the basics. I am very confident that will get you gaining.

Have you considered changing your username from cleanscience to broscience?

You people are lame. He at least tried to help the original poster while you people provided no insight whatsoever.

He gave decent advice for someone that wants to gain weight without gaining fat. Sure, there is controversy with some of the points mentioned (ie - there is debate among experts about whether some of these statements are true).

Following these rules doesn't make you a 'bro', an orange spray tan, gelled out hair and a bad attitude makes you a 'bro'.